C3K2150Portable Computing Device

Microsoft Corporation is an equal opportunity employer. 7/1/2026 FCC ID: C3K2150 To whom it may concern: We, the undersigned, hereby authorize Element Materials Technology Group Limited, to act on our behalf in all matters relating to applications for equipment authorization, including the signing of all documents relating to these matters. Any and all acts carried out by Element Materials Technology Group Limited on our behalf shall have the same effect as acts of our own. We also hereby certify that no party to any application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S. C. 862. Sincerely, Michael Boucher Compliance Engineer, Microsoft Corporation.

Date: 7/1/2026 Federal Communications Commissions Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 RE: CFR 47 §2.911 (d)(5) Attestation FCC ID: C3K2150 1. Microsoft Corporation (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. 2. Microsoft Corporation (“the applicant”) certifies that, the device does not have cybersecurity and / or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, identified on the Covered List installed on the device, nor will it be installed by the applicant anytime after certification. 3. Microsoft Corporation (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment and is not an affiliate or subsidiary of an entity identified on the Covered List. Sincerely, Michael Boucher Compliance Engineer, Microsoft Corporation.

Date: March 23, 2026 FederalCommunicationsCommissions Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 RE: CFR 47 §2.911 (d)(7) Agent Designation Attestation Grantee Code: C3K To whom it may concern: Microsoft Corporation (“the applicant”)as required by section §2.911(d)(7), will also serve as the agent for service of process. The applicant acknowledges that they will maintain an agent for no less than one year after thegranteehas terminatedall marketing andimportationortheconclusion ofanyCommission- related proceeding involving the equipment. The applicant further acknowledges their responsibility under CFR 47 §2.929(c) to inform the FCC whenever the agent information changes. Company Name:MicrosoftCorporation Contact Person: Hasnain Syed FCC FRN: 0006275291 CompanyUSAddress:OneMicrosoftWay,RedmondWA98052 Email: [email protected] Sincerely, Name: Hasnain Syed Title/Company: Sr. Director EMC/SI/RF Compliance, Microsoft Corporation

Microsoft Corporation is an equal opportunity employer. 7/1/2026 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject: Request for Confidentiality for FCC ID: C3K2150 To Whom It May Concern: Pursuant to the provisions of Sections 0.457 and 0.459 of the Commission’s rules (47 CFR § 0.457, § 0.459), we are requesting the Commission to withhold the following attachments as confidential document from public disclosure indefinitely. • Block Diagram • Schematics • Operational Description The above mentioned documents contain detailed system and equipment descriptions that are considered as proprietary information in the operation of the equipment. Public disclosure of the above documents might be harmful to our company and would give competitors an unfair advantage in the market. In additional to above mentioned documents, pursuant to Public Notice DA 04- 1705 of the Commission’s policy, in order to comply with the marketing regulations in 47 CFR §2.803 and the importation rules in 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of Microsoft Corporation is an equal opportunity employer. newly authorized devices, we are requesting the commission to grant short-term confidentiality on the following attachments until 1/1/2027 • External Photos • Test Setup Photos • User’s Manual • Internal Photos It is our understanding that all measurement test reports, FCC ID label format and correspondence during certification review process cannot be granted as confidential documents and the information will be available for public review once the grant of equipment authorization is issued. Sincerely, Michael Boucher Compliance Engineer, Microsoft Corporation.

Model 2150 Label Location Model 2150 FCC ID: C3K2150 Contains FCC ID: C3K00002101 Contains FCC ID: C3K2114 IC: 3048A -2150 Contains IC: 3048A-00002101 Contains IC: 3048A-2114 CAN ICES-3 (B)/NMB-3 (B)

FCC ID: C3K2150 RF Exposure Test Report Approved by: Technical Manager Document S/N: 1M2603250028-01.C3K DUT Type: Portable Computing Device This report is Blockchain Verified. To verify the report authenticity, please visit HTTPS://WWW.BLOCKCHAIN-VERIFIED.COM or by clicking on the Blockchain logo Page 1 of 20 REV 22.0 03/30/2022 Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from Element. If you have any questions or have an enquiry about obtaining additional rights to this report or assembly of contents thereof, please contact [email protected]. Applicant Name: Date of Testing: Microsoft Corporation 06/08/2026-06/22/2026 One Microsoft Way Test Site/Location: Redmond, WA 98052 USA Element, Columbia, MD, USA Document Serial No.: 1M2603250028-01.C3K F C C I D : C3K2150 A P P L I C A N T : MIC ROSO FT COR PORAT ION DUT Type: Portable Computing Device Application Type: Certification FCC Rule Part(s): CFR §2.1093 Model(s): 2150 Note, this report documents the RF exposure evaluation of host device FCC ID C3K2150, including SAR evaluation of the host NFC transmitter and the overall co- location and simultaneous transmission assessment for the transmitters incorporated into the host device. SAR evaluations for the WLAN/Bluetooth module (FCC ID C3K00002101) and cellular module (FCC ID C3K2114), as integrated into host device FCC ID C3K2150, are documented in their respective RF exposure test reports and corresponding FCC Class II Permissive Change filings. This wireless portable device has been shown to be capable of compliance for localized specific absorption rate (SAR) for uncontrolled environment/general population exposure limits specified in ANSI/IEEE C95.1-1992 and has been tested in accordance with the measurement procedures specified in Section 2.6 of this report; for North American frequency bands only. I attest to the accuracy of data. All measurements reported herein were performed by me or were made under my supervision and are correct to the best of my knowledge and belief. I assume full responsibility for the completeness of these measurements and vouch for the qualifications of all persons taking them. Test results reported herein relate only to the item(s) tested. The SAR Tick is an initiative of the Mobile & Wireless Forum (MWF). While a product may be considered eligible, use of the SAR Tick logo requires an agreement with the MWF. Further details can be obtained by emailing: [email protected]. SAR 1g SAR (W/kg) DXX NFC 13.56 MHz <0.1 1.59 Simultaneous SAR per KDB 690783 D01v01r03: Equipment Class Band & Mode Tx Frequency ELEMENT MATERIALS TECHNOLOGY 7185 Oakland Mills Road, Columbia, MD 21046 USA Tel. +1.410.290.6652 / Fax +1.410.290.6654 http://www.element.com RF Exposure Test Report FCC ID: C3K2150 RF Exposure Test Report Approved by: Technical Manager Document S/N: 1M2603250028-01.C3K DUT Type: Portable Computing Device This report is Blockchain Verified. To verify the report authenticity, please visit HTTPS://WWW.BLOCKCHAIN-VERIFIED.COM or by clicking on the Blockchain logo Page 2 of 20 REV 22.0 03/30/2022 Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from Element. If you have any questions or have an enquiry about obtaining additional rights to this report or assembly of contents thereof, please contact [email protected]. Revision Description Issue Date Revised By - Initial Release 07/23/2026 WKR017811 FCC ID: C3K2150 RF Exposure Test Report Approved by: Technical Manager Document S/N: 1M2603250028-01.C3K DUT Type: Portable Computing Device This report is Blockchain Verified. To verify the report authenticity, please visit HTTPS://WWW.BLOCKCHAIN-VERIFIED.COM or by clicking on the Blockchain logo Page 3 of 20 REV 22.0 03/30/2022 Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from Element. If you have any questions or have an enquiry about obtaining additional rights to this report or assembly of contents thereof, please contact [email protected]. T A B L E O F C O N T E N T S 1 TEST LABORATORY INFORMATION..........................................................................................................4 2 DEVICE UNDER TEST .................................................................................................................................5 3 INTRODUCTION ...........................................................................................................................................8 4 DOSIMETRIC ASSESSMENT ......................................................................................................................9 5 TEST CONFIGURATION POSITIONS....................................................................................................... 10 6 RF EXPOSURE LIMITS ............................................................................................................................. 11 7 SYSTEM VERIFICATION ........................................................................................................................... 12 8 SAR DATA SUMMARY .............................................................................................................................. 14 9 SAR MEASUREMENT VARIABILITY ........................................................................................................ 15 10 EQUIPMENT LIST ...................................................................................................................................... 16 11 MEASUREMENT UNCERTAINTIES...........................................…

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FCC ID: C3K2150 RF EXPOSURE TEST REPORT Approved by: Technical Manager DUT Type: Portable Computing Device This report is Blockchain Verified. To verify the report authenticity, please visit HTTPS://WWW.BLOCKCHAIN-VERIFIED.COM or by clicking on the Blockchain logo. APPENDIX A A P P E N D I X A : S A R T E S T P L O T S A1 ELEMENT DUT: C3K2150; Type: Portable Computing Device; Serial: 7BTD32609 Communication System: UID:0, CW; MAIA: Y; Frequency: 13.600 MHz Medium: Head Simulating Liquid; Medium parameters used: f = 13.600 MHz; cond = 0.782 S/m; perm = 56.3; density = 1000 kg/m3 Phantom Section: Flat; Space: 0.00 mm Test Date: 06/08/2026; Ambient Temp: 22.1°C; Tissue Temp: 20.9°C Probe: EX3DV4 - SN7570; ConvF:(19.27,21.05,18.22); Calibrated: 2026-02-11 Sensor-Surface: 1.4mm (VMS + 6p) Electronics: DAE4 Sn859; Calibrated: 2026-02-09 Phantom: ELI V8.0; Serial: 2077 Measurement SW: DASY Module SAR V16.4.0.5005 Mode: NFC, Antenna NFC, Type B, Body SAR, Back Side Area Scan (330.0 x 240.0): Measurement grid: dx=15.0 mm, dy=15.0 mm Zoom Scan (54.0 x 48.0 x 31.2): Measurement grid: dx=6.0 mm, dy=6.0 mm, dz=1.5 mm; Graded Ratio: 1.5 Reference Value = -0.00 W/kg; Power Drift = -0.15 dB Peak SAR (extrapolated) = 0 W/kg SAR(1 g) = 0.000 W/kg Smallest distance from peaks to all points 3 dB below is 1.7 mm Ratio of SAR at M2 to SAR at M1 = 66.4 % A2 ELEMENT DUT: C3K2150; Type: Portable Computing Device; Serial: 7BTD32609 Communication System: UID:0, CW; MAIA: Y; Frequency: 13.600 MHz Medium: Head Simulating Liquid; Medium parameters used: f = 13.600 MHz; cond = 0.786 S/m; perm = 53.5; density = 1000 kg/m3 Phantom Section: Flat; Space: 0.00 mm Test Date: 06/22/2026; Ambient Temp: 22.3°C; Tissue Temp: 22.2°C Probe: EX3DV4 - SN7570; ConvF:(19.27,21.05,18.22); Calibrated: 2026-02-11 Sensor-Surface: 1.4mm (VMS + 6p) Electronics: DAE4 Sn859; Calibrated: 2026-02-09 Phantom: ELI V8.0; Serial: 2077 Measurement SW: DASY Module SAR V16.4.0.5005 Mode: NFC, WPT Coil Antenna, Body SAR, Back Side Area Scan (330.0 x 255.0): Measurement grid: dx=15.0 mm, dy=15.0 mm Zoom Scan (30.0 x 30.0 x 31.2): Measurement grid: dx=6.0 mm, dy=6.0 mm, dz=1.5 mm; Graded Ratio: 1.5 Reference Value = 0.01 W/kg; Power Drift = 0.06 dB Peak SAR (extrapolated) = 0.076 W/kg SAR(1 g) = 0.007 W/kg Smallest distance from peaks to all points 3 dB below is 3.4 mm Ratio of SAR at M2 to SAR at M1 = 35.1 %

FCC ID: C3K2150 RF EXPOSURE TEST REPORT Approved by: Technical Manager DUT Type: Portable Computing Device This report is Blockchain Verified. To verify the report authenticity, please visit HTTPS://WWW.BLOCKCHAIN-VERIFIED.COM or by clicking on the Blockchain logo. APPENDIX B A P P E N D I X B : S A R D I P O L E V E R I F I C A T I O N P L O T S B1 ELEMENT DUT: Dipole 13.000 MHz; Type: CLA-13 - SN1002 Communication System: UID: 0, CW; Frequency: 13.000 MHz Medium: Head Simulating Liquid; Medium parameters used: f = 13.000 MHz; cond = 0.782 S/m; perm = 55.7; density = 1000 kg/m3 Phantom Section: Flat; Space: 0 mm Test Date: 06/08/2026; Ambient Temp: 22.1°C; Tissue Temp: 20.9°C Probe: EX3DV4 - SN7570; ConvF:(19.27,21.05,18.22); Calibrated: 2026-02-11 Sensor-Surface: 1.4mm (VMS + 6p) Electronics: DAE4 Sn859; Calibrated: 2026-02-09 Phantom: ELI V8.0; Serial: 2077 Measurement SW: DASY Module SAR V16.4.0.5005 13.0 MHz System Verification at 30.0 dBm (1000 mW) Area Scan (40.0 x 90.0): Measurement grid: dx=10.0 mm, dy=15.0 mm Zoom Scan (30.0 x 30.0 x 31.2): Measurement grid: dx=6.0 mm, dy=6.0 mm, dz=1.5 mm; Graded Ratio: 1.5 Peak SAR (extrapolated) = 1.09 W/kg SAR(1 g) = 0.544 W/kg; SAR(10 g) = 0.336 W/kg Deviation (1 g) = 8.15%; Deviation (10 g) = 6.33% B2 ELEMENT DUT: Dipole 13.000 MHz; Type: CLA-13 - SN1002 Communication System: UID: 0, CW; Frequency: 13.000 MHz Medium: Head Simulating Liquid; Medium parameters used: f = 13.000 MHz; cond = 0.786 S/m; perm = 53.2; density = 1000 kg/m3 Phantom Section: Flat; Space: 0 mm Test Date: 06/22/2026; Ambient Temp: 22.3°C; Tissue Temp: 22.2°C Probe: EX3DV4 - SN7570; ConvF:(19.27,21.05,18.22); Calibrated: 2026-02-11 Sensor-Surface: 1.4mm (VMS + 6p) Electronics: DAE4 Sn859; Calibrated: 2026-02-09 Phantom: ELI V8.0; Serial: 2077 Measurement SW: DASY Module SAR V16.4.0.5005 13.0 MHz System Verification at 30.0 dBm (1000 mW) Area Scan (40.0 x 90.0): Measurement grid: dx=10.0 mm, dy=15.0 mm Zoom Scan (30.0 x 30.0 x 31.2): Measurement grid: dx=6.0 mm, dy=6.0 mm, dz=1.5 mm; Graded Ratio: 1.5 Peak SAR (extrapolated) = 1.09 W/kg SAR(1 g) = 0.536 W/kg; SAR(10 g) = 0.332 W/kg Deviation (1 g) = 6.56%; Deviation (10 g) = 5.06%

FCC ID: C3K2150 RF EXPOSURE TEST REPORT Approved by: Technical Manager DUT Type: Portable Computing Device This report is Blockchain Verified. To verify the report authenticity, please visit HTTPS://WWW.BLOCKCHAIN-VERIFIED.COM or by clicking on the Blockchain logo. APPENDIX C A P P E N D I X C : P R O B E A N D D I P O L E C A L I B R A T I O N C E R T I F I C A T E S

FCC ID: C3K2150 RF EXPOSURE TEST REPORT Approved by: Technical Manager DUT Type: Portable Computing Device This report is Blockchain Verified. To verify the report authenticity, please visit HTTPS://WWW.BLOCKCHAIN-VERIFIED.COM or by clicking on the Blockchain logo. APPENDIX D: Page 1 of 2 A P P E N D I X D : S A R T I S S U E S P E C I F I C A T I O N S Measurement Procedure for Tissue verification: 1) The network analyzer and probe system was configured and calibrated. 2) The probe was immersed in the tissue. The tissue was placed in a nonmetallic container. Trapped air bubbles beneath the flange were minimized by placing the probe at a slight angle. 3) The complex admittance with respect to the probe aperture was measured 4) The complex relative permittivity ε ’ can be calculated from the below equation (Pournaropoulos and Misra): where Y is the admittance of the probe in contact with the sample, the primed and unprimed coordinates refer to source and observation points, respectively, ,  is the angular frequency, and . Figure D-1 Note: Liquid recipes are proprietary SPEAG. Since the composition is approximate to the actual liquids utilized, the manufacturer tissue-equivalent liquid data sheets are provided below. ( )          −  = b a b a r r d d d r r j a b j Y            0 2 / 1 0 ' 0 2 0 ) ( exp cos ln 2        −  + = cos 2 2 2 2 r 1 − = j FCC ID: C3K2150 RF EXPOSURE TEST REPORT Approved by: Technical Manager DUT Type: Portable Computing Device This report is Blockchain Verified. To verify the report authenticity, please visit HTTPS://WWW.BLOCKCHAIN-VERIFIED.COM or by clicking on the Blockchain logo. APPENDIX D: Page 2 of 2 Figure D-2 5– 250 MHz Head Tissue Equivalent Matter

FCC ID: C3K2150 RF EXPOSURE TEST REPORT Approved by: Technical Manager DUT Type: Portable Computing Device This report is Blockchain Verified. To verify the report authenticity, please visit HTTPS://WWW.BLOCKCHAIN- VERIFIED.COM or by clicking on the Blockchain logo APPENDIX E: Page 1 of 19 A P P E N D I X E : M U L T I-T X A N D A N T E N N A S A R C O N S I D E R A T I O N S E.1 Introduction The following procedures adopted from FCC KDB Publication 447498 D04v01 are applicable to devices with built in unlicensed transmitters such as 802.11 and Bluetooth devices which may simultaneously transmit with the licensed transmitter. E.2 Simultaneous Transmission Procedures This device contains transmitters that may operate simultaneously. Therefore, simultaneous transmission analysis is required. Per FCC KDB Publication 447498 D04v01 and IEEE 1528-2013 Section 6.3.4.1.2, simultaneous transmission SAR test exclusion may be applied when the sum of the 1-g SAR for all simultaneously transmitting antennas in a specific physical test configuration is ≤ 1.6 W/kg. The different test positions within an exposure condition may be considered collectively to determine SAR test exclusion based on the sum of the 1-g SAR values. Alternatively, simultaneous transmission SAR test exclusion may be evaluated using the Total Exposure Ratio (TER). The host device incorporates an NFC Reader, an NFC-based wireless power transfer (WPT) function, and two previously certified transmitter modules: the WLAN/Bluetooth module FCC ID C3K00002101 and the WWAN module FCC ID C3K2114. The applicable WWAN and WLAN/Bluetooth SAR results used in this simultaneous transmission assessment were obtained from their respective host-integration RF exposure test reports, Report Nos. 1M2606300059- 01.C3K and 1M2606300058-01.C3K, submitted under the corresponding FCC Class II Permissive Change (C2PC) filings. The NFC Reader and NFC-based WPT SAR results were measured under this host filing. These results are combined as applicable to evaluate the overall co-location and simultaneous transmission conditions of the final host configuration. The WLAN/Bluetooth module incorporates Qualcomm® FastConnect with predefined sub-6 GHz WLAN antenna groups AG0 and AG1. The WWAN module incorporates Qualcomm® Smart Transmit Gen2 with one WWAN antenna group. Simultaneous transmission analysis is performed based on the applicable antenna groups and transmitter combinations. The following analysis demonstrates the mutually exclusive operation of WLAN antenna groups AG0 and AG1 and evaluates the applicable simultaneous transmission combinations involving WLAN, Bluetooth, WWAN, NFC Reader, and NFC-based WPT. The Qualcomm Smart Transmit algorithm for WWAN accounts for the time-averaged RF exposure from 4G and 5G NR and controls the aggregate RF exposure to ensure compliance with the applicable FCC exposure limit. The Qualcomm FastConnect algorithm controls the aggregate WLAN RF exposure within the applicable limit. Accordingly, simultaneous transmission compliance for applicable intra-module transmission combinations is addressed through the corresponding algorithm validation, while inter-module and host-transmitter combinations are evaluated in this appendix.. E.3 Sub6 Antenna Groups The 2nd generation of Smart Transmit (GEN2) operates based on pre-defined sub6 antenna groups (AG). Sub6 Tx antennas in the device are grouped based on spatial variation of RF exposure distributions, where the RF exposure of one AG is mutually exclusive from other AG. This is accomplished by demonstrating either of below conditions for all exposure scenarios: a) Sum of SAR of one antenna from each of the sub6 AGs and the RF exposure from radios outside Smart Transmit is less than regulatory limits. This condition must be demonstrated for all antenna combinations of sub6 AGs. FCC ID: C3K2150 RF EXPOSURE TEST REPORT Approved by: Technical Manager DUT Type: Portable Computing Device This report is Blockchain Verified. To verify the report authenticity, please visit HTTPS://WWW.BLOCKCHAIN- VERIFIED.COM or by clicking on the Blockchain logo APPENDIX E: Page 2 of 19 (or) b) Every antenna from each sub6 AG meets SPLSR criteria (Section 4.3.2(c) in FCC KDB 447498 D04) with every antenna from another sub6 AG. This criteria must be demonstrated for all antenna combinations for each pair of AGs. This device supports one WWAN AG having 5 antennas (1, 2, 6, 7, 8) using Qualcomm's Smart Transmit, two WLAN AG: AG0 and AG1, with AG0 having 1 antenna (3) and AG1 having 1 antenna (4) using Qualcomm's FastConnect, and two Bluetooth and NFC antennas outside of TAS. The conditions are verified through the following criteria: i) (TER1 + TER2 criteria): If SPLSR criteria is not used, then the highest reported SAR at P limit (or P max when P limit > P max ) for each antenna should be obtained out of all supported technologies and frequency bands for each DSI. Demonstrate that the sum of reported SAR of one antenna from each of the sub6 AGs and the sum of RF exposure from all supported radios outside of Smart Transmit should be less than the regulatory limit as given below for each DSI. 1. Obtain the worst-case reported ER for each antenna group (i.e., maximum reported TER at Plimit (or Pmax when Plimit > Pmax) out of all supported technologies, frequency bands and antennas in AG0 and AG1), denoted as max.SAR.AG0, max.SAR.AG1, and max.SAR.WWAN, and obtain the worst- case RF exposure for each external radio, and demonstrate that the sum of these RF exposures meets: { [max.SAR.AG0 + max.SAR.AG1] + max.SAR.WWAN + BT Ant 1 + BT Ant 2 + NFC} ≤ 1.0 (for 1g). ii) (SPLSR criteria): For each antenna, obtain the highest reported TER value at P limit out of all supported technologies for each frequency band. Using these values, demonstrate for a given DSI that every antenna from one sub6 AG meets SPLSR criteria with every antenna in another sub6 AG for all frequency bands. This criteria must be demonstrated for all…

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FCC ID: C3K2150 RF EXPOSURE TEST REPORT Approved by: Technical Manager DUT Type: Portable Computing Device This report is Blockchain Verified. To verify the report authenticity, please visit HTTPS://WWW.BLOCKCHAIN-VERIFIED.COM or by clicking on the Blockchain logo. APPENDIX F: Page 1 of 1 A P P E N D I X F : S A R S Y S T E M V A L I D A T I O N Per FCC KDB Publication 865664 D02v01r02, SAR system validation status should be documented to confirm measurement accuracy. The SAR systems (including SAR probes, system components and software versions) used for this device were validated against its performance specifications prior to the SAR measurements. Reference dipoles were used with the required tissue- equivalent media for system validation, according to the procedures outlined in FCC KDB Publication 865664 D01v01r04 and IEC/IEEE 62209-1528:2020. Since SAR probe calibrations are frequency dependent, each probe calibration point was validated at a frequency within the valid frequency range of the probe calibration point, using the system that normally operates with the probe for routine SAR measurements and according to the required tissue-equivalent media. A tabulated summary of the system validation status including the validation date(s), measurement frequencies, SAR probes and tissue dielectric parameters has been included. Table F-1 SAR System Validation Summary NOTE: The probes have been calibrated for both CW and modulated signals. Modulations in the table above represent test configurations for which the measurement system has been validated per FCC KDB Publication 865664 D01v01r04 for scenarios when CW probe calibrations are used with other signal types. SAR systems were validated for modulated signals with a periodic duty cycle, such as GMSK, or with a high peak to average ratio (>5 dB), such as OFDM according to FCC KDB Publication 865664 D01v01r0 SENSITIVITY PROBE LINEARITY PROBE ISOTROPY MOD. TYPE DUTY FACTOR PAR G 13 04/03/2026 7570 859 13 Head 0.757 53.089 PASS PASS PASS N/A N/A N/A Perm. (εr) CW VALIDATION MOD. VALIDATION Cond. (σ) Probe Cal Point SAR System Freq. (MHz) Date Probe SN DAE

FCC ID: C3K2150 MEASUREMENT REPORT (Certification) Test Dates: EUT Type: Approved by: 05/27/2026 - 06/24/2026 Portable Computing Device Technical Manager Test Report S/N: This report is Blockchain Verified. To verify the report authenticity, please visit HTTPS://WWW.BLOCKCHAIN-VERIFIED.COM or by clicking on the Blockchain logo. Page 1 of 36 1M2603250028-12.C3K-R1 © 2026 ELEMENT V11.3 5/14/2025 Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without written permission from Element. If you have any questions about this or have an inquiry about obtaining additional rights to this report or assembly of contents thereof, please contact [email protected]. Applicant Name: Microsoft Corporation 1 Microsoft Way Redmond, WA 98052-8300 United States Date of Testing: 05/27/2026 - 06/24/2026 Test Report Issue Date: 7/21/2026 Test Site/Location: Element lab., Columbia, MD, USA Test Report Serial No.: 1M2603250028-12.C3K-R1 FCC ID: C3K2150 APPLICANT: Microsoft Corporation Application Type: Certification EUT Type: Portable Computing Device Frequency: 13.56MHz FCC Classification: Low Power Communications Device Transmitter (DXX) FCC Rule Part(s): Part 15 Subpart C (15.225) FCC Test Procedure(s): ANSI C63.10:2020 + Cor. 1:2023 This equipment has been shown to be capable of compliance with the applicable technical standards as indicated in the measurement report and was tested in accordance with the measurement procedures specified in ANSI C63.10:2020. Test results reported herein relate only to the item(s) tested. This revised Test Report (S/N: 1M2603250028-12.C3K) supersedes and replaces the previously issued test report (S/N: 1M2603250028-12.C3K-R1) on the same subject device for the same type of testing as indicated. Please discard or destroy the previously issued test report(s) and dispose of it accordingly. I attest to the accuracy of data. All measurements reported herein were performed by me or were made under my supervision and are correct to the best of my knowledge and belief. I assume full responsibility for the completeness of these measurements and vouch for the qualifications of all persons taking them. RJ Ortanez Executive Vice President ELEMENT MATERIALS TECHNOLOGY, Columbia MD (formerly PCTEST) 7185 Oakland Mills Road, Columbia, MD 21046 USA Tel. 410.290.6652 / Fax 410.290.6654 http://www.element.com MEASUREMENT REPORT FCC Part 15.225 NFC / FCC Part 15C Wireless Power Transfer FCC ID: C3K2150 MEASUREMENT REPORT (Certification) Test Dates: EUT Type: Approved by: 05/27/2026 - 06/24/2026 Portable Computing Device Technical Manager Test Report S/N: This report is Blockchain Verified. To verify the report authenticity, please visit HTTPS://WWW.BLOCKCHAIN-VERIFIED.COM or by clicking on the Blockchain logo. Page 2 of 36 1M2603250028-12.C3K-R1 © 2026 ELEMENT V11.3 5/14/2025 Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without written permission from Element. If you have any questions about this or have an inquiry about obtaining additional rights to this report or assembly of contents thereof, please contact [email protected]. TEST REPORT REVISION HISTORY Rev. No. Description Issue Date Revised By - Initial Release 7/21/2026 WKR0000005874 1 Addressed comments made by TCB reviewer 7/21/2026 WKR0000005874 FCC ID: C3K2150 MEASUREMENT REPORT (Certification) Test Dates: EUT Type: Approved by: 05/27/2026 - 06/24/2026 Portable Computing Device Technical Manager Test Report S/N: This report is Blockchain Verified. To verify the report authenticity, please visit HTTPS://WWW.BLOCKCHAIN-VERIFIED.COM or by clicking on the Blockchain logo. Page 3 of 36 1M2603250028-12.C3K-R1 © 2026 ELEMENT V11.3 5/14/2025 Unless otherwise specified, no part of this report may be reproduced or utilized in any part, form or by any means, electronic or mechanical, including photocopying and microfilm, without written permission from Element. If you have any questions about this or have an inquiry about obtaining additional rights to this report or assembly of contents thereof, please contact [email protected]. T A B L E O F C O N T E N T S 1.0 Introduction ..................…

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