PPD-AR5BUB1731X1 single band 802.11b/g/n USB module

Atheros Communications, Inc. 1700 Technology Drive, San Jose, CA 95110 t 408 773 5200 f 408-773-9940 www.atheros.com Date: 2010/9/13 General declaration We, Atheros Communications, Inc. declares that device does not have “Ad Hoc on non-US frequencies” while applying for the follow product. FCC ID: PPD-AR5BUB173 If you have any questions regarding the authorization, please don’t hesitate to contact us. Thank you! --------------------------------------------------------------------------- Michael Green / Manager, Global Product Compliance Atheros Communications, Inc.

Professional Installation Attestation Date:2010/9/15 To whom it may concern: The AR5BUB173 is targeted at the Industrial User and is not to the General Consumer User. Please be advised that due to the unique Market and function targeted by this product, this product will need special trained professional in configuring and installing the product. We hereby declare that the product will be distributed through controlled distribution channel which has special trained professional to install this product and will not be sold directly to the general public through retail store. This authorization is limited to the following products： FCC ID：PPD-AR5BUB173 If you have any questions regarding the authorization, please don’t hesitate to contact us. Thank you! Sincerely yours, --------------------------------------------------------------------------- Michael Green / Manager, Global Product Compliance Atheros Communications, Inc. Atheros Communications, Inc. 1700 Technology Drive, San Jose, CA 95110 t 408 773 5200 f 408-773-9940 www.atheros.com

Atheros Communications, Inc. 1700 Technology Drive, San Jose, CA 95110 t 408 773 5200 f 408-773-9940 www.atheros.com Date:2010/9/13 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject: Request for Confidentiality FCC ID: PPD-AR5BUB173 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. Schematic Diagram Block Diagram Theory of Operation Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. Pursuant to DA 04-1705 of the Commission’s Rules, we request short-term confidential treatment for the following information until Dec. 31, 2010 of Equipment Authorization in order to ensure sensitive business information remains confidential until the actual marketing of the device: External Photos Internal Photos Test Setup Photos User Manual It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Best Regards --------------------------------------------------------------------------- Michael Green / Manager, Global Product Compliance Atheros Communications, Inc.

FCC ID: PPD-AR5BUB173 Report No. : RF990903E02 Modular Approval Request Letter Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Oct. 12, 2010 Dear Application Examiner, Atheros Communications, Inc., It’s Low Power 1X1 single band 802.11b/g/n USB module, FCC ID: PPD-AR5BUB173 would like to have your authorization as a modular approval. The requirements of section 15.212 of FCC rules have been met and shown on the following statements. “The modular transmitter must have its own RF shielding.”: The radio portion of this module has been shielded, please see exhibition External Photo. 1. “The modular transmitter must have buffered modulation/data inputs.” The EUT has buffered data inputs, it is integrated in chip AR9271. 2. “The modular transmitter must have its own power supply regulation part no.: AR9271. 3. “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. 4. “The modular transmitter must be tested in a stand-alone configuration”. The EUT is tested in a stand-alone configuration via an extender. Please see section Photographs of Test Configuration in the test report. 5. “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. FCC ID: PPD-AR5BUB173 Report No. : RF990903E02 6. “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. 7. “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, Hank Chung Assistant Manager Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch

Atheros Communications, Inc. 1700 Technology Drive, San Jose, CA 95110 t 408 773 5200 f 408-773-9940 www.atheros.com Power of Attorney 2010/9/13 To whom it may concern: We, the undersigned Atheros Communications, Inc. hereby authorize Bureau Veritas Consumer Product Service (Hong Kong) Limited, Taoyuan Branch of Taiwan to act on our behalf in all matters relating to all processes required in the FCC Part 15B+C approval and any communication needed with the national authority. Any and all acts carried out by BVCPS on our behalf shall have the same effects as acts of our own. This authorization is limited to the following products： FCC ID: PPD-AR5BUB173 If you have any questions regarding the authorization, please don’t hesitate to contact us. Thank you! Sincerely yours, --------------------------------------------------------------------------- Michael Green / Manager, Global Product Compliance Atheros Communications, Inc.

Page 1 CONSTRUCTION PHOTOS OF EUT

PROPOSED FCC ID LABEL AND LOCATION Bottom of EUT FCC /IC Label Location ATHEROS COMMUNICATIONS, INC. 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. FCC ID: PPD-AR5BUB173 IC: 4104A-AR5BUB173 Model: AR5BUB173

Page 2 Page 3 Antenna 1: PCB Page 4 Antenna 2: PCB Page 5 Antenna 3: PIFA Page 6 Page 7 Antenna 4: PIFA Page 8

Report No.: FD990903E02 1 Report Format Version 3.0.2 FCC DoC TEST REPORT REPORT NO. : FD990903E02 MODEL NO. : AR5BUB173 RECEIVED : Sep. 02, 2010 TESTED : Sep. 24 to Oct. 01, 2010 ISSUED: Oct. 11, 2010 APPLICANT : Atheros Communications, Inc. ADDRESS : 1700 Technology Drive, San Jose, CA 95110 ISSUED BY : Bureau Veritas Consumer Products Services (H.K.) Ltd., Taoyuan Branch Hsin Chu Laboratory LAB ADDRESS : No. 81-1, Lu Liao Keng, 9th Ling, Wu Lung Tsuen, Chiung Lin Hsiang, Hsin Chu Hsien 307, Taiwan. TEST LOCATION (1): No. 81-1, Lu Liao Keng, 9th Ling,Wu Lung Tsuen, Chiung Lin Hsiang, Hsin Chu Hsien 307, Taiwan TEST LOCATION (2): No.49, Ln. 206, Wende Rd., Shangshan Tsuen, Chiung Lin Hsiang, Hsin Chu Hsien 307, Taiwan This test report consists of 35 pages in total. It may be duplicated completely for legal use with the approval of the applicant. It should not be reproduced except in full, without the written approval of our laboratory. The client should not use it to claim product certification, approval, or endorsement by TAF, NVLAP, NIST or any government agencies. The test results in the report only apply to the tested sample. The test results in this report are traceable to the national or international standards. Report No.: FD990903E02 2 Report Format Version 3.0.2 Table of Contents 1 CERTIFICATION.............................................................................................3 2 SUMMARY OF TEST RESULTS.....................................................................4 2.1 MEASUREMENT UNCERTAINTY..................................................................4 3 GENERAL INFORMATION.............................................................................5 3.1 GENERAL DESCRIPTION OF EUT................................................................5 3.2 ANTENNA SPECIFICATIONS........................................................................6 3.3 GENERAL DESCRIPTION OF TEST MODE..................................................6 3.4 DESCRIPTION OF SUPPORT UNITS............................................................7 3.5 CONFIGURATION OF SYSTEM UNDER TEST.............................................7 4 EMISSION TEST.............................................................................................8 4.1 CONDUCTED EMISSION MEASUREMENT..................................................8 4.1.1 LIMITS OF CONDUCTED EMISSION MEASUREMENT................................8 4.1.2 TEST INSTRUMENTS....................................................................................8 4.1.3 TEST PROCEDURE.......................................................................................9 4.1.4 DEVIATION FROM TEST STANDARD...........................................................9 4.1.5 TEST SETUP..................................................................................................9 4.1.6 EUT OPERATING CONDITIONS..................................................................10 4.1.7 TEST RESULTS.............................................................................................11 4.2 RADIATED EMISSION MEASUREMENT.....................................................13 4.2.1 LIMITS OF RADIATED EMISSION MEASUREMENT...................................13 4.2.2 TEST INSTRUMENTS..................................................................................14 4.2.3 TEST PROCEDURE.....................................................................................16 4.2.4 DEVIATION FROM TEST STANDARD.........................................................16 4.2.5 TEST SETUP................................................................................................17 4.2.6 EUT OPERATING CONDITIONS..................................................................17 4.2.7 TEST RESULTS (MODE 1)...........................................................................18 4.2.8 TEST RESULTS (MODE 2)...........................................................................22 4.2.9 TEST RESULTS (MODE 3)...........................................................................26 4.2.10 TEST RESULTS (MODE 4)...........................................................................30 5 INFORMATION ON THE TESTING LABORATORIES..................................34 6 APPENDIX A - MODIFICATIONS RECORDERS FOR ENGINEERING CHANGES TO THE EUT BY THE LAB.....................................................................35 Report No.: FD990903E02 3 Report Format Version 3.0.2 1 CERTIFICATION PRODUCT : 1X1 single band 802.11b/g/n USB module BRAND NAME : Atheros MODEL NO. : AR5BUB173 TESTED : Sep. 24 to Oct. 01, 2010 TEST SAMPLE : R&D SAMPLE APPLICANT : Atheros Communications, Inc. STANDARDS : FCC Part 15, Subpart B, Class B ANSI C63.4-2003 CISPR 22: 1997, Class B ICES-003: 2004, Class B The above equipment (Model: AR5BUB173) 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: Oct. 11, 2010 ( Sunny Wen, Specialist ) TECHNICAL ACCEPTANCE : , DATE: Oct. 11, 2010 ( Hank Chung, Deputy Manager ) APPROVED BY : , DATE: Oct. 11, 2010 ( May Chen, Deputy Manager ) Report No.: FD990903E02 4 Report Format Version 3.0.2 2 SUMMARY OF TEST RESULTS Standard Test Type Result Remarks Conducted Test PASS Meets Class B Limit Minimum passing margin is -8.76dB at 3.805MHz FCC Part 15 Subpart B, Class B CISPR 22: 1997, Class B ICES-003: Class B Radiated Test PASS Meets Class B Limit Minimum passing margin is -6.84 dB at 240.00 MHz NOTE: The limit for radiated test was performed according to CISPR 22, which was specified in FCC PART 15 Subpart B 15.109(g). Also the limits of ICES-003: 2004 and CISPR 22 are same. 2.1 MEASUREMENT…

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