C3K1889Dual-band wireless accessory radio

1 889 (Accessory Radio) Module Setup Diagram Dual-band wireless accessory radio Please prepare “Windows 7 OS” Notebook Step1. Insert Type B to PC USB & Adapter，Device Manager show Picture，and press Mouse Right Key update，When install finish： Before After Setp2.Executexxx\\customer_package_UIv2.06_DLLv4.09_E2-20190402_WinDriverV.0. 0.2.5_FWv.42a1045_VIDPIDCorrected\ QATool_Dbg.exe for Start QA Tool： ==================backup====================== If driver shows exclamation mark, follow the steps to update Step1.Check Hardware identification code Step2.Open the safety information Step3.Key in the Hardware identification code you got from step1 Federal Communication Commission Interference Statement This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -Consult the dealer or an experienced radio/TV technician for help. FCC Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate this equipment. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. Operations in the 5.15-5.25GHz band are restricted to indoor usage only. Radiation Exposure Statement: This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator & your body. This module is intended for OEM integrators only. Per FCC KDB 996369 D03 OEM Manual v01 guidance, the following conditions must be strictly followed when using this certified module: KDB 996369 D03 OEM Manual v01 rule sections: 2.2 List of applicable FCC rules This module has been tested for compliance to FCC Part 15.247 & Part 15 Subpart E. 2.3 Summarize the specific operational use conditions The module is tested for standalone mobile RF exposure use condition. Any other usage conditions such as co-location with other transmitter(s) or being used in a portable condition will need a separate reassessment through a class II permissive change application or new certification. 2.4 Limited module procedures This module is limited to specific Microsoft Host, authenticated and operated by non-alterable secure program code contained and controlled by the Host as described in the application exhibit. 2.5 Trace antenna designs Not applicable. 2.6 RF exposure considerations This equipment complies with FCC mobile radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with a minimum distance of 20cm between the radiator & your body. If the module is installed in a portable host, a separate SAR evaluation is required to confirm compliance with relevant FCC portable RF exposure rules. 2.7 Antennas The following antennas have been certified for use with this module; antennas of the same type with equal or lower gain may also be used with this module. The antenna must be installed such that 20 cm can be maintained between the antenna and users. 2.8 Label and compliance information The final end product must be labeled in a visible area with the following: “Contains FCC ID: C3K1889”. The grantee's FCC ID can be used only when all FCC compliance requirements are met. 2.9 Information on test modes and additional testing requirements This transmitter is tested in a standalone mobile RF exposure condition and any co-located or simultaneous transmission with other transmitter(s) or portable use will require a separate class II permissive change re-evaluation or new certification. 2.10 Additional testing, Part 15 Subpart B disclaimer This transmitter module is tested as a subsystem and its certification does not cover the FCC Part 15 Subpart B (unintentional radiator) rule requirement applicable to the final host. The final host will still need to be reassessed for compliance to this portion of rule requirements if applicable. As long as all conditions above are met, further transmitter test will not be required. However, the OEM integrator is still responsible for testing their end-product for any additional compliance requirements required with this module installed. IMPORTANT NOTE: In the event that these conditions can not be met (for example certain laptop configurations or co-location with another transmitter), then the FCC authorization is no longer considered valid and the FCC ID can not be used on the final product. In these circumstances, the OEM integrator will be responsible for re-evaluating the end product (including the transmitter) and obtaining a separate FCC authorization. Manual Information To the End User The OEM integrator has to be aware not to provide information to the end user regarding how to install or remove this RF module in the user’s manual …

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Date: June 10, 2020 We, Microsoft Corporation declare that the device does not support channel 12 ~ 13 in 2.4GHz band and any non-US channels in all the operational mode(s) for the following product. FCC ID: C3K1889 If you should have any question(s) regarding this declaration, please don’t hesitate to contact us. Thank you! Sincerely, Chaitrali Limaye Compliance Engineer Microsoft Corporation

6/29/2020 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject: Request for Confidentiality for FCC ID: C3K1889 To Whom It May Concern: Pursuant to the provisions of the Commission’s rules 47 CFR sections 0.457(d) and 0.459, we are requesting the Commission to withhold the following attachments as confidential document from public disclosure indefinitely. •Block Diagram •Schematics •Operational Description (includes SW security) 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, 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 newly authorized devices, we are requesting the commission to grant short-term confidentiality on the following attachments until December 23rd, 2020. Microsoft Corporation is an equal opportunity employer. Microsoft Corporation is an equal opportunity employer. •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, Chaitrali Limaye Compliance Engineer, Microsoft Corporation.

Date: 6/18/2020 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 FCC ID: C3K1889; IC: 3048A-1889 To whom it may concern: I, the undersigned, hereby authorize Debby Lin/ Senior Specialist of Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch (“BV CPS Taoyuan”) and hereafter referred to as Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch (“BV CPS Taoyuan”) to act on our behalf in all manners relating to application for equipment authorization, including signing of all documents relating to these matters. Any and all acts carried out by Debby Lin/ Senior Specialist of Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch (“BV CPS Taoyuan”) on our behalf shall have the same effect as acts of our own. I, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). In authorizing Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch (“BV CPS Taoyuan”) as our agent, we still recognize that we are responsible to: a)Comply with the relevant provisions of the certification program; b)make all necessary arrangements for the conduct of the evaluation, including provision for examining documentation and access to all areas, records (including internal audit reports) and personnel for the purposes of evaluation (e.g. testing, inspection, assessment, surveillance, reassessment) and resolution of complaints; c)Make claims regarding certification only in respect of the scope for which certification has been granted; d)Do not use our product certification in such a manner as to bring the Certification Division into disrepute and not make any statement regarding our product certification which the Certification Division may consider misleading or unauthorized; e)Upon suspension or cancellation of certification, discontinue use of all advertising matter that contains any reference thereto and return any certification documents as required by the Certification Division; f)Use certification only to indicate the products are certified as being in conformity with specified standards; g)Endeavor to ensure that no certificate or report nor any part thereof is used in a misleading manner; h)ensure that any reference to our product certification in communication media such as documents, brochures or advertising, complies with the requirements of the Certification Division; i)keep a record of all complaints made known to the us relating to the product’s compliance with requirements of the relevant standard and to make these records available to the Certification Division when requested; j)take appropriate action with respect to such complaints and any deficiencies found in products or services that affect compliance with the requirements for certification; k)Document the actions taken. This authorization is valid until further written notice from the applicant. Sincerely, ----------------------------------- Chaitrali Limaye Compliance Engineer, Microsoft Corporation

Microsoft Corporation is an equal opportunity employer. Subject: Authorized signatories February 26, 2019 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, Maryland 21046 AGENCY AUTHORIZATION LETTER FOR MICROSOFT EMPLOYEES To whom it may concern, I, the undersigned hereby authorize the following, to act on my behalf, as the agent(s), in all matters relating to all processes for FCC equipment authorization for Microsoft® Corporation (Grantee Code: C3K). Hasnain Syed Anindita Mitra David Johnson Michael Boucher Kyle Chen Chaitrali Limaye Wei Sun Zachary Gray Daniel Salinas Vishwas Varadanahalli Narayan Albert Huang Mengni Yin Choon Sian Ooi Nisha Nandakumar If you have any questions regarding the authorization, please don’t hesitate to contact me. Sincerely, Hasnain Syed Sr. Director, EMC/SI & RF Compliance Microsoft Corporation Email: [email protected]

FCC ID: C3K1889 Modular Approval Request Letter July 8, 2020 Dear Application Examiner, The requirements of KDB996369 have been met and shown on the following statements. 1. “The modular transmitter must have its own RF shielding.” The radio portion of this module has been shielded, please see exhibition External Photo. 2. “The modular transmitter must have buffered modulation/data inputs.” The EUT has buffered data inputs to ensure compliance with Part 15 requirements under conditions of excessive data rates or over-modulation. Please see the Schematics exhibit submitted in this application. 3. “The modular transmitter must have its own power supply regulation. The EUT has its own power supply regulation to ensure compliance with Part 15 requirements regardless of the quality or level of external DC supplying the module from the host unit. The technical report exhibit submitted in this application contains AC power line conducted emissions data taken with the EUT powered from a linear power supply that contains no EMC suppression components. 4. “The modular transmitter must comply with the antenna requirements of section 15.203 and 15.204(C).” The EUT meets the FCC antenna requirements. The spurious emission, unique antenna connector and photo of antennas are shown in the test report. 5. “The modular transmitter must be tested in a stand-alone configuration.” This module is limited to specific Microsoft Host, authenticated and operated by non-alterable secure program code contained and controlled by the Host as described in the application exhibit. 6. “The modular transmitter must be labeled with its own FCC ID number.” Please see exhibition Label Sample for the FCC ID of this module. And also in the exhibition Users Manual, there are instructions give to the OEM on how to label the end product. Microsoft Corporation, 1889, FCC ID: C3K1889 would like to have your authorization as a limited modular approval specific to the mobile RF exposure condition. FCC ID: C3K1889 7. “The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements.” The EUT is compliant with all applicable FCC rules. Detail instructions for maintaining compliance are given in the Users Manual. 8. “The modular transmitter must comply with any applicable RF exposure requirements.” The EUT is compliant with all applicable RF exposure requirements. RF Exposure is addressed in the RF exposure exhibition. Please contact me if you have any further questions. Thanks for your attention. Best Regards, Debby Lin Senior Specialist Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch

Reference No.: 191227E01 Page No. 1 / 3 CONSTRUCTION PHOTOS OF EUT Model 1889 Internal Pictures Antenna 1 (MAIN) Antenna 2 (DIV) Reference No.: 191227E01 Page No. 2 / 3 PCB top edge with RF shield removed Radio IC Reference No.: 191227E01 Page No. 3 / 3 PCB bottom edge with RF shield removed

Report No.: SA191227E01 Page No. 1 / 7 Report Format Version: 6.1.1 Reference No.: 200114E03 RF Exposure Report Report No.: SA191227E01 FCC ID: C3K1889 Test Model: 1889 Received Date: Jan. 14, 2020 Test Date: Apr. 13 to May 14, 2020 Issued Date: June 24, 2020 Applicant: Microsoft Corporation Address: One Microsoft Way,Redmond,Washington 98052-6399,United States Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Hsin Chu Laboratory Lab Address: E-2, No.1, Li Hsin 1st Road, Hsinchu Science Park, Hsinchu City 300, Taiwan Test Location: E-2, No.1, Li Hsin 1st Road, Hsinchu Science Park, Hsinchu City 300, Taiwan FCC Registration / Designation Number: 723255 / TW2022 This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification. The report must not be used by the client to claim product certification, approval, or endorsement by TAF any government agencies. Report No.: SA191227E01 Page No. 2 / 7 Report Format Version: 6.1.1 Reference No.: 200114E03 Table of Contents Release Control Record .................................................................................................................................. 3 1 Certificate of Conformity ...................................................................................................................... 4 2 RF Exposure .......................................................................................................................................... 5 2.1 Limits for Maximum Permissible Exposure (MPE) .............................................................................. 5 2.2 MPE Calculation Formula ................................................................................................................... 5 2.3 Classification ....................................................................................................................................... 5 2.4 Antenna Gain ...................................................................................................................................... 6 2.5 Calculation Result of Maximum Conducted Power ............................................................................. 7 Report No.: SA191227E01 Page No. 3 / 7 Report Format Version: 6.1.1 Reference No.: 200114E03 Release Control Record Issue No. Description Date Issued SA191227E01 Original release. June 24, 2020 Report No.: SA191227E01 Page No. 4 / 7 Report Format Version: 6.1.1 Reference No.: 200114E03 1 Certificate of Conformity Product: Dual-band wireless accessory radio Brand: Microsoft Test Model: 1889 Sample Status: ENGINEERING SAMPLE Applicant: Microsoft Corporation Test Date: Apr. 13 to May 14, 2020 Standards: FCC Part 2 (Section 2.1091) IEEE C95.3 -2002 References Test Guidance: KDB 447498 D01 General RF Exposure Guidance v06 The above equipment has been tested by Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch, and found compliance with the requirement of the above standards. The test record, data evaluation & Equipment Under Test (EUT) configurations represented herein are true and accurate accounts of the measurements of the sample’s EMC characteristics under the conditions specified in this report. Prepared by : , Date: June 24, 2020 Claire Kuan / Specialist Approved by : , Date: June 24, 2020 Clark Lin / Technical Manager Report No.: SA191227E01 Page No. 5 / 7 Report Format Version: 6.1.1 Reference No.: 200114E03 2 RF Exposure 2.1 Limits for Maximum Permissible Exposure (MPE) Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Average Time (minutes) Limits For General Population / Uncontrolled Exposure 0.3-1.34 614 1.63 (100)* 30 1.34-30 824/f 2.19/f (180/f 2 )* 30 30-300 27.5 0.073 0.2 30 300-1500 ... ... f/1500 30 1500-100,000 ... ... 1.0 30 f = Frequency in MHz ; *Plane-wave equivalent power density 2.2 MPE Calculation Formula Pd = (Pout*G) / (4*pi*r 2 ) where Pd = power density in mW/cm 2 Pout = output power to antenna in mW G = gain of antenna in linear scale Pi = 3.1416 R = distance between observation point and center of the radiator in cm 2.3 Classification The antenna of this product, under normal use condition, is at least 20 cm away from the body of the user. So, this device is classified as Mobile Device. Report No.: SA191227E01 Page No. 6 / 7 Report Format Version: 6.1.1 Reference No.: 200114E03 2.4 Antenna Gain Antenna No. Transmitter Circuit Antenna Net Gain(dBi) Frequency range Antenna Type Connector Type Cable Length MAIN 0 4.56 2.4 ~ 2.4835GHz PCB NA NA 3.93 5.15~5.25GHz (5G B1) PCB NA NA 3.94 5.25~5.35GHz (5G B2) PCB NA NA 3.48 5.47~5.725GHz (5G B3) PCB NA NA 3.35 5.725~5.85GHz (5G B4) PCB NA NA DIV 1 --- 2.4 ~ 2.4835GHz PCB NA NA 3.21 5.15~5.25GHz (5G B1) PCB NA NA 3.3 5.25~5…

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Report No.: RF191227E01 Page No. 1 / 54 Report Format Version: 6.1.2 FCC Test Report Report No.: RF191227E01 FCC ID: C3K1889 Test Model: 1889 Received Date: Dec. 27, 2019 Test Date: Mar. 24 to May 13, 2020 Issued Date: June 24, 2020 Applicant: Microsoft Corporation Address: One Microsoft Way,Redmond,Washington 98052-6399,United States Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Hsin Chu Laboratory Lab Address: E-2, No.1, Li Hsin 1st Road, Hsinchu Science Park, Hsinchu City 300, Taiwan Test Location : E-2, No.1, Li Hsin 1st Road, Hsinchu Science Park, Hsinchu City 300, Taiwan FCC Registration / Designation Number: 723255 / TW2022 This report is for your exclusive use. Any copying or replication of this report to or for any other person or entity, or use of our name or trademark, is permitted only with our prior written permission. This report sets forth our findings solely with respect to the test samples identified herein. The results set forth in this report are not indicative or representative of the quality or characteristics of the lot from which a test sample was taken or any similar or identical product unless specifically and expressly noted. Our report includes all of the tests requested by you and the results thereof based upon the information that you provided to us. You have 60 days from date of issuance of this report to notify us of any material error or omission caused by our negligence, provided, however, that such notice shall be in writing and shall specifically address the issue you wish to raise. A failure to raise such issue within the prescribed time shall constitute your unqualified acceptance of the completeness of this report, the tests conducted and the correctness of the report contents. Unless specific mention, the uncertainty of measurement has been explicitly taken into account to declare the compliance or non-compliance to the specification. The report must not be used by the client to claim product certification, approval, or endorsement by TAF or any government agencies. Report No.: RF191227E01 Page No. 2 / 54 Report Format Version: 6.1.2 Table of Contents Release Control Record .................................................................................................................................. 4 1 Certificate of Conformity ...................................................................................................................... 5 2 Summary of Test Results ..................................................................................................................... 6 2.1 Measurement Uncertainty ................................................................................................................... 6 2.2 Modification Record ............................................................................................................................ 6 3 General Information .............................................................................................................................. 7 3.1 General Description of EUT ................................................................................................................ 7 3.2 Description of Test Modes ................................................................................................................... 8 3.2.1 Test Mode Applicability and Tested Channel Detail ............................................................................. 9 3.3 Duty Cycle of Test Signal ................................................................................................................... 11 3.4 Description of Support Units ............................................................................................................. 12 3.4.1 Configuration of System under Test .................................................................................................. 13 3.5 General Description of Applied Standards and references ............................................................... 14 4 Test Types and Results ...................................................................................................................... 15 4.1 Radiated Emission and Bandedge Measurement (Radiated Versus Conducted) ............................ 15 4.1.1 Limits of Radiated Emission and Bandedge Measurement .............................................................. 15 4.1.2 Test Instruments ................................................................................................................................ 16 4.1.3 Test Procedures ................................................................................................................................. 18 4.1.4 Deviation from Test Standard ............................................................................................................ 19 4.1.5 Test Setup .......................................................................................................................................... 20 4.1.6 EUT Operating Conditions ................................................................................................................. 21 4.1.7 Test Results (Radiated Measurement) .............................................................................................. 22 4.1.8 Test Results (Conducted Measurement) ........................................................................................... 31 4.2 Conducted Emission Measurement .................................................................................................. 40 4.2.1 Limits of Conducted Emission Measurement .................................................................................... 40 4.2.2 Test Instruments ................................................................................................................................ 40 4.2.3 Test Procedures ..........................................................................…

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Reference No.: 191227E01 Page No. 1 / 7 Report No.: {report no} PHOTOGRAPHS OF THE TEST CONFIGURATION AC POWER CONDUCTED EMISSION TEST Reference No.: 191227E01 Page No. 2 / 7 Report No.: {report no} RADIATED EMISSION TEST (Below 1GHz) Reference No.: 191227E01 Page No. 3 / 7 Report No.: {report no} Frequency Range: 9kHz - 30MHz Frequency Range: 30MHz – 1GHz Reference No.: 191227E01 Page No. 4 / 7 Report No.: {report no} Reference No.: 191227E01 Page No. 5 / 7 Report No.: {report no} RADIATED EMISSION TEST (Above 1GHz) Reference No.: 191227E01 Page No. 6 / 7 Report No.: {report no} Frequency Range: 1GHz – 18GHz Frequency Range: 18GHz – 40GHz Reference No.: 191227E01 Page No. 7 / 7 Report No.: {report no} CONDUCTED EMISSION TEST