RF Exposure Info (MPE)_rev2

FCC ID: C3K1915

RF Exposure Info

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FCCID_4441623

RF Exposure Test Report Report No.: SA190716C36 FCC ID: C3K1915 Test Model: 1915 Received Date: Jul. 3, 2019 Test Date: Jul. 9, 2019 Issued Date: Jul. 22, 2019 Applicant: MICROSOFT CORPORATION Address: ONE MICROSOFT WAY REDMOND, WA 98052-6399 Issued By: Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Lab Address: No. 47-2, 14th Ling, Chia Pau Vil., Lin Kou Dist., New Taipei City, Taiwan, R.O.C. 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. The report must not be used by the client to claim product certification, approval, or endorsement by TAF or any government agencies. Report No.: SA190716C36 Page No. 1 / 11 Report Format Version: 6.1.1

Table of Contents Release Control Record .................................................................................................................................. 3 1 Certificate of Conformity...................................................................................................................... 4 2 General Information .............................................................................................................................. 5 2.1 General Description of EUT ................................................................................................................ 5 3 RF Exposure .......................................................................................................................................... 6 3.1 Description of Support Units ............................................................................................................... 6 3.1.1 Configuration of System under Test .................................................................................................... 6 3.2 Test Setup ........................................................................................................................................... 7 3.3 Test Instruments .................................................................................................................................. 7 3.4 Limits for Maximum Permissible Exposure (MPE) .............................................................................. 8 3.5 Test Point Description ......................................................................................................................... 8 4 Calculation Result of Maximum Conducted Power........................................................................... 9 5 Photographs of the Test Configuration ............................................................................................. 11 Report No.: SA190716C36 Page No. 2 / 11 Report Format Version: 6.1.1

Release Control Record Issue No. Description Date Issued SA190716C36 Original release. Jul. 22, 2019 Report No.: SA190716C36 Page No. 3 / 11 Report Format Version: 6.1.1

1 Certificate of Conformity Product: Wireless charger Brand: Microsoft Test Model: 1915 Sample Status: Engineering sample Applicant: MICROSOFT CORPORATION Test Date: Jul. 9, 2019 Standards: FCC Part 2 (Section 2.1091) FCC Part 1 (Section 1.1307(c) and (d), Section 1.1310) KDB 680106 D01 RF Exposure Wireless Charging v03 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: Jul. 22, 2019 Jessica Cheng / Senior Specialist Approved by : , Date: Jul. 22, 2019 Rex Lai / Associate Technical Manager Report No.: SA190716C36 Page No. 4 / 11 Report Format Version: 6.1.1

2 General Information 2.1 General Description of EUT Product Wireless charger Brand Microsoft Test Model 1915 Sample Status Engineering sample Rating 5Vdc , 200mA Modulation Type ASK Operating Frequency 13.56MHz Antenna Type NFC FPC loop antenna Field Strength 37.69dBuV/m Dimensions 162.9mm*17mm *9.9 mm Accessory Device N/A Data Cable Supplied USB to type C shielded cable (0.45m) Maximum Power Output from the 300mW Charging Coil Note: The above EUT information is declared by manufacturer and for more detailed features description, please refer to the manufacturer's specifications or user's manual. Report No.: SA190716C36 Page No. 5 / 11 Report Format Version: 6.1.1

3 RF Exposure 3.1 Description of Support Units The EUT has been tested as an independent unit together with other necessary accessories or support units. The following support units or accessories were used to form a representative test configuration during the tests. ID Product Brand Model No. Serial No. FCC ID Remarks A. Notebook Lenovo 81A4 YD02TWDP N/A Provided by Lab B. Load N/A N/A N/A N/A Supplied by client Note: All power cords of the above support units are non-shielded (1.8m). Shielding ID Descriptions Qty. Length (m) Cores (Qty.) Remarks (Yes/No) 1. USB to Type C cable 1 0.45 Y 0 Supplied by client Note: The core(s) is(are) originally attached to the cable(s). 3.1.1 Configuration of System under Test Charging Mode: Load (B) 1 Notebook (A) EUT Standby Mode: 1 Notebook (A) EUT Report No.: SA190716C36 Page No. 6 / 11 Report Format Version: 6.1.1

3.2 Test Setup 15 cm EUT Field Probe Note: Measurements should be made from all sides and the top of the primary/client pair, with the 15 cm measured from the center of the probe(s) to the edge of the device. 3.3 Test Instruments Description Brand Model No. Frequency Range Calibrated Date Calibrated Until Broadband Field NARDA NBM-550 - Mar. 28, 2018 Mar. 27, 2020 Meter Magnetic Field NARDA ELT-400 1 – 400kHz Apr. 12, 2018 Apr. 11, 2020 Meter Magnetic Probe NARDA HF-3061 300kHz – 30MHz Apr. 16, 2018 Apr. 15, 2020 Magnetic Probe NARDA HF-0191 27 – 1000MHz Apr. 17, 2018 Apr. 16, 2020 Broadband Field NARDA NBM-550 - Mar. 28, 2018 Mar. 27, 2020 Meter Electric Field Meter COMBINOVA EFM 200 5Hz – 400kHz Dec. 6, 2017 Dec. 5, 2019 E-Field Probe NARDA EF-0391 100kHz – 3GHz Mar. 28, 2018 Mar. 27, 2020 E-Field Probe NARDA EF-6091 100MHz – 60GHz Mar. 29, 2018 Mar. 28, 2020 NOTE: 1. The calibration interval of the above test instruments is 12/24 months and the calibrations are traceable to NML/ROC and NIST/USA. 2. The test was performed in Chia Pau RF Chamber 3. Determining compliance based on the results of the compliance measurement, not taking into account measurement instrumentation uncertainty. Report No.: SA190716C36 Page No. 7 / 11 Report Format Version: 6.1.1

3.4 Limits for Maximum Permissible Exposure (MPE) § 1.1310 The criteria listed in table 1 shall be used to evaluate the environmental impact of human exposure to radiofrequency(RF) radiation as specified in § 1.1307(b), except in the case of portable devices which shall be evaluated according to the provisions of § 2.1093 of this chapter. 680106 D01 RF Exposure Wireless Charging App v03 The aggregate H-field strengths at 15 cm surrounding the device and 15 cm above the top surface from all simultaneous transmitting coils are demonstrated to be less than 50% of the MPE limit. 3.5 Test Point Description Z-axis (Top) Top Left Right Bottom Z-axis (Bottom) Report No.: SA190716C36 Page No. 8 / 11 Report Format Version: 6.1.1

4 Calculation Result of Maximum Conducted Power Charging Mode with 90% Load E-Field Measurement Distance 15cm Z-axis Z-axis EUT Side Left Right Top Bottom Top Bottom Max E-field (V/m) 0.5600 0.2500 0.1500 0.2200 0.2400 0.1900 Limit (V/m) 60.77 60.77 60.77 60.77 60.77 60.77 Margin (V/m) -60.2100 -60.5200 -60.6200 -60.5500 -60.5300 -60.5800 50 % Limit (V/m) 30.385 30.385 30.385 30.385 30.385 30.385 50 % Margin (V/m) -29.8250 -30.1350 -30.2350 -30.1650 -30.1450 -30.1950 H-Field Measurement Distance 15cm Z-axis Z-axis EUT Side Left Right Top Bottom Top Bottom Max H-field (A/m) 0.0231 0.0201 0.0202 0.0205 0.0229 0.0186 Limit (A/m) 0.16 0.16 0.16 0.16 0.16 0.16 Margin (A/m) -0.1369 -0.1399 -0.1398 -0.1395 -0.1371 -0.1414 50 % Limit (A/m) 0.08 0.08 0.08 0.08 0.08 0.08 50 % Margin (A/m) -0.0569 -0.0599 -0.0598 -0.0595 -0.0571 -0.0614 Measurements were made from all sides and the top of the primary/client pair, with the 15 cm measured from the center of the probe(s) to the edge of the device. The highest emission level was recorded. Charging Mode with 50% Load E-Field Measurement Distance 15cm Z-axis Z-axis EUT Side Left Right Top Bottom Top Bottom Max E-field (V/m) 0.4900 0.2000 0.1300 0.1900 0.1900 0.1500 Limit (V/m) 60.77 60.77 60.77 60.77 60.77 60.77 Margin (V/m) -60.2800 -60.5700 -60.6400 -60.5800 -60.5800 -60.6200 50 % Limit (V/m) 30.385 30.385 30.385 30.385 30.385 30.3850 50 % Margin (V/m) -29.8950 -30.1850 -30.2550 -30.1950 -30.1950 -30.2350 H-Field Measurement Distance 15cm Z-axis Z-axis EUT Side Left Right Top Bottom Top Bottom Max H-field (A/m) 0.0201 0.0189 0.0194 0.0193 0.0227 0.0187 Limit (A/m) 0.16 0.16 0.16 0.16 0.16 0.16 Margin (A/m) -0.1399 -0.1411 -0.1406 -0.1407 -0.1373 -0.1413 50 % Limit (A/m) 0.08 0.08 0.08 0.08 0.08 0.08 50 % Margin (A/m) -0.0599 -0.0611 -0.0606 -0.0607 -0.0573 -0.0613 Measurements were made from all sides and the top of the primary/client pair, with the 15 cm measured from the center of the probe(s) to the edge of the device. The highest emission level was recorded. Report No.: SA190716C36 Page No. 9 / 11 Report Format Version: 6.1.1

Charging Mode with 10% Load E-Field Measurement Distance 15cm Z-axis Z-axis EUT Side Left Right Top Bottom Top Bottom Max E-field (V/m) 0.4100 0.1800 0.1100 0.1600 0.1600 0.1200 Limit (V/m) 60.77 60.77 60.77 60.77 60.77 60.77 Margin (V/m) -60.3600 -60.5900 -60.6600 -60.6100 -60.6100 -60.6500 50 % Limit (V/m) 30.385 30.385 30.385 30.385 30.385 30.385 50 % Margin (V/m) -29.9750 -30.2050 -30.2750 -30.2250 -30.2250 -30.2650 H-Field Measurement Distance 15cm Z-axis Z-axis EUT Side Left Right Top Bottom Top Bottom Max H-field (A/m) 0.0194 0.0181 0.0188 0.0186 0.0215 0.0174 Limit (A/m) 0.16 0.16 0.16 0.16 0.16 0.16 Margin (A/m) -0.1406 -0.1419 -0.1412 -0.1414 -0.1385 -0.1426 50 % Limit (A/m) 0.08 0.08 0.08 0.08 0.08 0.08 50 % Margin (A/m) -0.0606 -0.0619 -0.0612 -0.0614 -0.0585 -0.0626 Measurements were made from all sides and the top of the primary/client pair, with the 15 cm measured from the center of the probe(s) to the edge of the device. The highest emission level was recorded. Standby Mode E-Field Measurement Distance 15cm Z-axis Z-axis EUT Side Left Right Top Bottom Top Bottom Max E-field (V/m) 0.2900 0.4400 0.1900 0.2200 0.0280 0.2400 Limit (V/m) 60.77 60.77 60.77 60.77 60.77 60.77 Margin (V/m) -60.4800 -60.3300 -60.5800 -60.5500 -60.7420 -60.5300 50 % Limit (V/m) 30.385 30.385 30.385 30.385 30.385 30.385 50 % Margin (V/m) -30.0950 -29.9450 -30.1950 -30.1650 -30.3570 -30.1450 H-Field Measurement Distance 15cm Z-axis Z-axis EUT Side Left Right Top Bottom Top Bottom Max H-field (A/m) 0.0282 0.0183 0.0200 0.0195 0.0196 0.0153 Limit (A/m) 0.16 0.16 0.16 0.16 0.16 0.16 Margin (A/m) -0.1318 -0.1417 -0.1400 -0.1405 -0.1404 -0.1447 50 % Limit (A/m) 0.08 0.08 0.08 0.08 0.08 0.08 50 % Margin (A/m) -0.0518 -0.0617 -0.0600 -0.0605 -0.0604 -0.0647 Measurements were made from all sides and the top of the primary/client pair, with the 15 cm measured from the center of the probe(s) to the edge of the device. The highest emission level was recorded. Report No.: SA190716C36 Page No. 10 / 11 Report Format Version: 6.1.1

5 Photographs of the Test Configuration Please refer to the attached file (Test Setup Photo). --- END --- Report No.: SA190716C36 Page No. 11 / 11 Report Format Version: 6.1.1


Document Created: 2019-10-01 04:46:26
Document Modified: 2019-10-01 04:46:26
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