C5F7NFCST-71SUUSB Hub

September 10, 1999 Federal Communications Commission Equipment Approval Services 7435 Oakland Mills Road Columbia, MD 21046 SUBJECT:DAEWOO Electronics Co., Ltd. FCC ID: C5F7NFCST-71SU Gentlemen: Submitted herewith, on behalf of DAEWOO Electronics Co., Ltd., is an application for Part 15 Certification of the following peripheral device: EUT TYPE:USB Hub FCC ID:C5F7NFCST-71SU MODEL:CST-71SU TRADE NAME:DAEWOO USB connectors:(4) downstream, (1) upstream Attached is the authorization letter, measurement report (Radiation emission data, Line Conducted emission data and test plots), FCC ID label and location, test setup photographs, internal and external photographs, block diagram, and the user's manual. Should you have any questions or comments concerning the above, please contact the undersigned. cc:Mr. Joon H. Lee Chief of EMC Group DAEWOO Electronics Co., Ltd. ISRC

Test Report S/N: B.990831504.C5FFCC Class B Test Date(s): September 02-03, 1999Certification © 1999 PCTEST Lab FCC ID: C5F7NFCST-71SU NVLAP Lab Code: 100431-0 DAEWOO 5-Port USB Hub Test Report S/N: B.990831504.C5FFCC Class B Test Date(s): September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU NVLAP Lab Code: 100431-0 DAEWOO 5-Port USB Hub Test Report S/N: B.990831504.C5FFCC Class B Test Date(s): September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU NVLAP Lab Code: 100431-0 DAEWOO 5-Port USB Hub

© 1999 PCTEST Lab FCC ID SAMPLE LABEL LOCATION LABELLING REQUIREMENTS PER §§ 2.925 & §§ 15.19 The Label shown shall be permanently affixed at a conspicuous location on the device and be readily visible to the user at the time of purchase. (SEE NEXT PAGE)

Test Report S/N: B.990831504.C5FFCC Class B Test Date(s): September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU NVLAP Lab Code: 100431-0 DAEWOO 5-Port USB Hub Test Report S/N: B.990831504.C5FFCC Class B Test Date(s): September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU NVLAP Lab Code: 100431-0 DAEWOO 5-Port USB Hub Test Report S/N: B.990831504.C5FFCC Class B Test Date(s): September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU NVLAP Lab Code: 100431-0 DAEWOO 5-Port USB Hub Test Report S/N: B.990831504.C5FFCC Class B Test Date(s): September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU NVLAP Lab Code: 100431-0 DAEWOO 5-Port USB Hub Test Report S/N: B.990831504.C5FFCC Class B Test Date(s): September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU NVLAP Lab Code: 100431-0 DAEWOO 5-Port USB Hub Test Report S/N: B.990831504.C5FFCC Class B Test Date(s): September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU NVLAP Lab Code: 100431-0 DAEWOO 5-Port USB Hub Test Report S/N: B.990831504.C5FFCC Class B Test Date(s): September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU NVLAP Lab Code: 100431-0 DAEWOO 5-Port USB Hub

© 1999 PCTEST Engineering Lab., Inc. PCTEST Engineering Laboratory, Inc. 6660-B Dobbin Road 6660-B Dobbin Road •• Columbia, MD 21045 Columbia, MD 21045 •• U.S.A. U.S.A. TEL (410) 290-6652 TEL (410) 290-6652 •• FAX (410) 290-6654 FAX (410) 290-6654 http://www.pctestlab.comhttp://www.pctestlab.com CERTIFICATE OF COMPLIANCE DAEWOO Electronics Co., Ltd.Dates of Tests: September 02-03, 1999 International Standards Research CenterTest Report S/N: B.990831504.C5F 543, Dangjung-Dong, Kunpo-CityTest Site: PCTEST Lab., MD U.S.A. Kyonggi-Do, 435-030, KOREA Attn: Mr. Joon H. LEE, Chief of EMC Group FCC ID C5F7NFCST-71SU APPLICANT DAEWOO ELECTRONICS CO., LTD. Rule Part(s): FCC Part 15 Subpart B Equipment Class: Class B Peripheral Device (JBP) EUT Type: USB Hub Port(s)/Connector(s): (1) USB Upstream, (4) USB Downstream, (1) DC Power connector Power Supply: from host computer or AC/DC power adapter (SYN Electronics Power Adapter Model: SYS1089-1305-W3) Trade Name/Model: Daewoo ® CST-71SU 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 is ANSI C63.4-1992 (Note Codes: #37). 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. PCTEST certifies that no party to this application has been denied the FCC benefits pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). Lab Code 100431-0 © 1999 PCTEST Engineering Laboratory, Inc. FCC Class B TABLE OF CONTENTS ATTACHMENT A: COVER LETTER(S) ATTACHMENT B: ATTESTATION STATEMENT(S) ATTACHMENT C: TEST REPORT SCOPE 1 INTRODUCTION (SITE DESCRIPTION) 2 PRODUCTION INFORMATION 3 DESCRIPTION OF TESTS (CONDUCTED) 4 DESCRIPTION OF TESTS (RADIATED) 5 LIST OF SUPPORT EQUIPMENT 6 TEST DATA (CONDUCTED) 7 TEST DATA (RADIATED) 8 SAMPLE CALCULATIONS 9 ACCURACY OF MEASUREMENT10 LIST OF TEST EQUIPMENT11 TEST SOFTWARE USED12 RECOMMENDATION / CONCLUSION13 ATTACHMENT D: TEST PLOTS ATTACHMENT E: FCC ID LABEL & LOCATION ATTACHMENT F: BLOCK DIAGRAM(S) ATTACHMENT G: SCHEMATIC DIAGRAM(S) ATTACHMENT H: TEST SETUP PHOTOGRAPHS ATTACHMENT I: EXTERNAL PHOTOGRAPHS ATTACHMENT J: INTERNAL PHOTOGRAPHS ATTACHMENT K: USER’S MANUAL Test Report S/N: B.990831504.C5FFCC Class B Dates of Tests: September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU1 DAEWOO 5-Port USB Hub MEASUREMENT REPORT Scope - Measurement and determination of electromagnetic emissions (EME) of radio frequency devices including intentional and/or unintentional radiators for compliance with the technical rules and regulations of the Federal Communications Commission. Company Name:DAEWOO ELECTRONICS CO., LTD. Address:International Standards Research Center 543, Dangjung-Dong, Kunpo-City, Kyonggi-Do, 435-030, KOREA Attention:Joon H. LEE - Chief of EMC Group • FCC ID:C5F7NFCST-71SU • Equipment Class:B Digital Device / Peripheral (JBP) • EUT Type:USB Hub • Trade Name(s):DAEWOO ® • Model(s):CST-71SU • Cable(s):Shielded USB • Power Cord(s):Unshielded • Rule Part(s):FCC Part 15 Subpart B • Test Procedure(s):ANSI C63.4 (1992) • Dates of Tests:September 02-03, 1999 • Place of Tests:PCTEST Lab, Columbia, MD U.S.A. • Test Report S/N:B.990831504.C5F Lab Code 100431-0 Test Report S/N: B.990831504.C5FFCC Class B Dates of Tests: September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU2 DAEWOO 5-Port USB Hub 1.1 INTRODUCTION The measurement procedure described in American National Standard for Methods of Measurement of Radio- Noise Emissions from Low-Voltage Electrical and Electronic Equipment in the Range of 9kHz to 40GHz (ANSI C63.4-1992) was used in determining radiated and conducted emissions emanating from DAEWOO Electronics Co., Ltd. USB Hub FCC ID: C5F7NFCST-71SU. These measurement tests were conducted at PCTEST Engineering Laboratory, Inc. facility in New Concept Business Park, Guilford Industrial Park, Columbia, Maryland. The site address is 6660-B Dobbin Road, Columbia, MD 21045. The test site is one of the highest points in the Columbia area with an elevation of 390 feet above mean sea level. The site coordinates are 39° 11'15" N latitude and 76° 49'38" W longitude. The facility is 1.5 miles North of the FCC laboratory, and the ambient signal and ambient signal strength are approximately equal to those of the FCC laboratory. There are no FM or TV transmitters within 15 miles of the site. The detailed description of the measurement facility was found to be in compliance with the requirements of § 2.948 according to ANSI C63.4 on October 19, 1992. 1.2 PCTEST Location The map at right shows the location of the PCTEST Lab, its proximity to the FCC Lab, the Columbia vicinity area, the Baltimore-Washington International (BWI) airport, and the city of Baltimore, and the Washington, D.C. area. (see Figure1). Figure 1. Map of the Greater Baltimore and Metropolitan Washington, D.C. area. Test Report S/N: B.990831504.C5FFCC Class B Dates of Tests: September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU3 DAEWOO 5-Port USB Hub 2.1 Product Information 2.2 Equipment Description The Equipment Under Test (EUT) is the DAEWOO Electronics Co., Ltd. (Model: CST-71SU) 5-Port USB Hub FCC ID: C5F7NFCST-71SU. Hub Controller:KC82C160S (KC Technology Inc.) Crystal(s) / Oscillator(s):12.000MHz Port(s) / Connector(s):(1) USB Up-stream (4) USB Down-stream (1) DC Power connector Cable(s):Shielded USB Power Supply:from host computer or AC/DC power adapter (SYN Electronics Co., Ltd. Model: SYS1089-1305-W3 Input: 100-240V, 1.0A, 50-60Hz / Output: 2.6A) Dimensions (WxHxD):280 x 65 x 270 mm Weight (net):554g Test Report S/N: B.990831504.C5FFCC Class B Dates of Tests: September 02-03, 1999Ce…

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Test Report S/N: B.990831504.C5FFCC Class B Test Date(s): September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU NVLAP Lab Code: 100431-0 DAEWOO 5-Port USB Hub Test Report S/N: B.990831504.C5FFCC Class B Test Date(s): September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU NVLAP Lab Code: 100431-0 DAEWOO 5-Port USB Hub Test Report S/N: B.990831504.C5FFCC Class B Test Date(s): September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU NVLAP Lab Code: 100431-0 DAEWOO 5-Port USB Hub Test Report S/N: B.990831504.C5FFCC Class B Test Date(s): September 02-03, 1999Certification © 1999 PCTEST LabFCC ID: C5F7NFCST-71SU NVLAP Lab Code: 100431-0 DAEWOO 5-Port USB Hub