EMJMMS3121WPMouse

Dell Pro Wireless Keyboard and Mouse KM5221W Quick Start Guide 4 © 2020 Dell Inc. or its subsidiaries.2020-09 A00 https://www.dell.com/support https://www.dell.com/regulatory_compliance Dell Peripheral Manager https://www.dell.com/support/drivers 3 USB USB Dell Pro Wireless Keyboard and Mouse KM5221W Quick Start Guide 2 3214 12 1 12

No. 669, Ruey Kuang Road Neihu Taipei, Taiwan, R.O.C. Tel: 886-2-2798-9008 Fax: 886-2-8798-1565 Declaration letter Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject: Declaration letter for label requirement The label is permanent affixed in the battery compartment, and the EUT will be selling to market without the battery installed. The users can see the label during the battery installation process. The battery cover can be opened without any special tools. Please don’t hesitate to contact us, if you have any question(s). Thank you! ------------------------------------------------------------------- C.T. Huang Compliance Dept. / Director Phone: 886-2-2798-9008 Fax: 886-2-8797-1565 Email: [email protected] Date: 2020-09-04 FCC ID:EMJMMS3121WP

No. 669, Ruey Kuang Road Neihu Taipei, Taiwan, R.O.C. Tel: 886-2-2798-9008 Fax: 886-2-8798-1565 Date: August 26, 2020 FCC ID: EMJMMS3121WP To the attention of Federal Communications Commission Authorization and Evaluation Division Confidentiality Request Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, the Applicant hereby requests confidential treatment of information accompanying this Application as outlined below: Block Diagram Schematics Operational Description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457, disclosure of this Application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely yours, ------------------------------------------------------------------- C.T. Huang Compliance Dept. / Director Phone: 886-2-2798-9008 Fax: 886-2-8797-1565 Email: [email protected]

No. 669, Ruey Kuang Road Neihu Taipei, Taiwan, R.O.C. Tel: 883-2-2798-9008 Fax: 886-2-8798-1565 Date: 2020-08-26 FCC ID: EMJMMS3121WP AUTHORIZATION LETTER To whom it may concern: We, the undersigned, hereby authorize Andrea Hsia / Supervisor of Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch (BV CPS Taoyuan) of Taiwan to act on our behalf in all manners relating to FCC application for equipment authorization, including signing of all documents relating to these matters. Any and all acts carried out by Andrea Hsia / Supervisor of BV CPS Taoyuan on our behalf shall have the same effect as acts of our own. If you have any questions regarding the authorization, please don’t hesitate to contact us. Sincerely yours, ------------------------------------------------------------------- C.T. Huang Compliance Dept. / Director Phone: 886-2-2798-9008 Fax: 886-2-8797-1565 Email: [email protected]

Reference No.:BDKX-WTW-P20080444-ExtPho Page 1/3 CONSTRUCTION PHOTOS OF EUT Reference No.:BDKX-WTW-P20080444-ExtPho Page 2/3 Reference No.:BDKX-WTW-P20080444-ExtPho Page 3/3

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Reference No.:BDKX-WTW-P20080444-IntPho Page 1/4 CONSTRUCTION PHOTOS OF EUT Reference No.:BDKX-WTW-P20080444-IntPho Page 2/4 Reference No.:BDKX-WTW-P20080444-IntPho Page 3/4 Reference No.:BDKX-WTW-P20080444-IntPho Page 4/4 Antenna

Report No.: SABDKX-WTW-P20080444 Page No. 1 / 6 Report Format Version: 6.1.1 RF Exposure Report Report No.: SABDKX-WTW-P20080444 FCC ID: EMJMMS3121WP Test Model: MS3121Wp Received Date: Aug. 21, 2020 Test Date: Aug. 27 to Sep. 9, 2020 Issued Date: Sep. 14, 2020 Applicant: PRIMAX ELECTRONICS LTD. Address: No. 669, Ruey Kuang Road, Neihu, Taipei, Taiwan, R.O.C. Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Lin Kou Laboratories Lab Address: No. 47-2, 14th Ling, Chia Pau Vil., Lin Kou Dist., New Taipei City, Taiwan FCC Registration / Designation Number: 198487 / TW2021 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. Report No.: SABDKX-WTW-P20080444 Page No. 2 / 6 Report Format Version: 6.1.1 Table of Contents Release Control Record .................................................................................................................................... 3 1 Certificate of Conformity ......................................................................................................................... 4 2 Evaluation Result .................................................................................................................................... 5 3 SAR Test Exclusion Thresholds .............................................................................................................. 6 4 Conclusion .............................................................................................................................................. 6 Report No.: SABDKX-WTW-P20080444 Page No. 3 / 6 Report Format Version: 6.1.1 Release Control Record Issue No. Description Date Issued SABDKX-WTW-P20080444 Original release. Sep. 14, 2020 Report No.: SABDKX-WTW-P20080444 Page No. 4 / 6 Report Format Version: 6.1.1 1 Certificate of Conformity Product: Mouse Brand: DELL Test Model: MS3121Wp Sample Status: Engineering sample Applicant: PRIMAX ELECTRONICS LTD. Test Date: Aug. 27 to Sep. 9, 2020 Standards: FCC Part 2 (Section 2.1093) IEEE C95.1-1992 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 RF characteristics under the conditions specified in this report. Prepared by : , Date: Sep. 14, 2020 Celia Chen / Supervisor Approved by : , Date: Sep. 14, 2020 Rex Lai / Associate Technical Manager Report No.: SABDKX-WTW-P20080444 Page No. 5 / 6 Report Format Version: 6.1.1 2 Evaluation Result Following FCC KDB 447498 D01 “General SAR test exclusion guidance” The corresponding SAR Exclusion Threshold condition, listed below: 1) The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ꞏ[√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where  f(GHz) is the RF channel transmit frequency in GHz.  Power and distance are rounded to the nearest mW and mm before calculation .  The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. 2) At 100 MHz to 6 GHz and for test separation distances > 50 mm, the SAR test exclusion threshold is determined according to the following: a) [Threshold at 50 mm in step 1) + (test separation distance - 50mm)ꞏ( f(MHz)/150)] mW, at 100MHz to 1500 MHz b) [Threshold at 50 mm in step 1) + (test separation distance - 50 mm)ꞏ10] mW at > 1500 MHz and ≤ 6 GHz 3) At frequencies below 100 MHz, the following may be considered for SAR test exclusion. a) The threshold at the corresponding test separation distance at 100 MHz in step 2) is multiplied by [1 + log(100/f(MHz))] for test separation distances > 50 mm and < 200 mm. b) The threshold determined by the equation in a) for 50 mm and 100 MHz is multiplied by ½ for test separation distances ≤ 50 mm. c) SAR measurement procedures are not established below 100 MHz. When SAR test exclusion cannot be applied, a KDB inquiry is required to determine SAR evaluation requirements for any test results to be acceptable. Report No.: SABDKX-WTW-P20080444 Page No. 6 / 6 Report Format Version: 6.1.1 3 SAR Test Exclusion Thresholds Maximum measured transmitter power: Function Frequency (GHz) Max. Radiated Field Strength (dB…

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Report No.: RFBDKX-WTW-P20080444 Page No. 1 / 24 Report Format Version: 6.1.1 FCC Test Report Report No.: RFBDKX-WTW-P20080444 FCC ID: EMJMMS3121WP Test Model: MS3121Wp Received Date: Aug. 21, 2020 Test Date: Aug. 27 to Sep. 9, 2020 Issued Date: Sep. 14, 2020 Applicant: PRIMAX ELECTRONICS LTD. Address: No. 669, Ruey Kuang Road, Neihu, Taipei, Taiwan, R.O.C. Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Lin Kou Laboratories Lab Address: No. 47-2, 14th Ling, Chia Pau Vil., Lin Kou Dist., New Taipei City, Taiwan FCC Registration / Designation Number: 198487 / TW2021 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. Report No.: RFBDKX-WTW-P20080444 Page No. 2 / 24 Report Format Version: 6.1.1 Table of Contents Release Control Record .................................................................................................................................. 3 1 Certificate of Conformity ...................................................................................................................... 4 2 Summary of Test Results ..................................................................................................................... 5 2.1 Measurement Uncertainty ................................................................................................................... 5 2.2 Modification Record ............................................................................................................................ 5 3 General Information .............................................................................................................................. 6 3.1 General Description of EUT ................................................................................................................ 6 3.2 Description of Test Modes ................................................................................................................... 7 3.2.1 Test Mode Applicability and Tested Channel Detail ............................................................................. 8 3.3 Description of Support Units ............................................................................................................... 9 3.3.1 Configuration of System under Test .................................................................................................... 9 3.4 General Description of Applied Standards .......................................................................................... 9 4 Test Types and Results ...................................................................................................................... 10 4.1 Radiated Emission and Bandedge Measurement ............................................................................. 10 4.1.1 Limits of Radiated Emission and Bandedge Measurement .............................................................. 10 4.1.2 Test Instruments ................................................................................................................................. 11 4.1.3 Test Procedures ................................................................................................................................. 12 4.1.4 Deviation from Test Standard ............................................................................................................ 12 4.1.5 Test Setup .......................................................................................................................................... 13 4.1.6 EUT Operating Conditions ................................................................................................................. 14 4.1.7 Test Results ....................................................................................................................................... 15 4.2 Channel Bandwidth ........................................................................................................................... 21 4.2.1 Test Setup .......................................................................................................................................... 21 4.2.2 Test Instruments ................................................................................................................................ 21 4.2.3 Test Procedure .................................................................................................................................. 21 4.2.4 Deviation from Test Standard ............................................................................................................ 21 4.2.5 EUT Operating Condition .................................................................................................................. 21 4.2.6 Test Results ...................…

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Reference No.: RFBDKX-WTW-P20080444 Page No. 1 / 2 PHOTOGRAPHS OF THE TEST CONFIGURATION RADIATED EMISSION TEST <Frequency Range below 1GHz> Reference No.: RFBDKX-WTW-P20080444 Page No. 2 / 2 RADIATED EMISSION TEST <Frequency Range above 1GHz>