3Com 10/100BASE-T4 инструкция обслуживания

® F AST E THER L INK â P ARALLEL T ASKING â 1 0 / 1 00B ASE- T4 PCI N ET W ORK A DAPTER U SER G UIDE A member of the 3Com Fast EtherLink family of adapters Part No. 09-0808-000 Published January 1996[...]

3Com C orporation ■ 5400 Bayfront Plaza ■ Santa Clara, California ■ 95052-8145 © 3Com Corporation, 1996. All rights r eserved. No part of this documentation may be reproduced in any form or by an y means or used to make any derivativ e work (such as translation, transformation, or adaptation) without permission from 3Com C orporation. 3Com C[...]

® L IFETIME W ARRANTY 3Com ’ s EtherLink â , T okenLink â , F ast EtherLink, FDDILink ä , and 3Com Impact ä ISDN ISA adapters have a Lif etime Warranty . T o ensure the very best 3Com ser vice and suppor t, take the time to complete the product registration card . Any defective 3C om adapter will be repair ed or replaced , at 3Com ’ s opti[...]

Customers in the countries shown belo w should send the completed registration card to the appr opriate address. C ustomers in other non-U.S. locations should send the registration card to the U.S. address on the fr ont of the card . ■ Asia 3Com Asia Ltd., Marketing Department Room 2506-07, 25/F., Citibank Tower Citibank Plaza, Central Hong Kong [...]

C ONTENTS A BOUT T HIS G UIDE Introduction 1 How to Use This Guide 1 Con ventions 2 1 I NTRODUCTION Adapter F eatures 1-3 PCI T echnology 1-4 2 I NSTALLING THE A DAPTER Inspecting the Adapter 2-1 Installing the Boot PROM 2-2 Installing the Adapter 2-2 Connecting to the Network 2-3 3 L OADING THE N ETWORK D RIVERS Summary of Driver Loading Pr ocedur[...]

Loading NDIS Drivers 3-11 Updating NDIS Drivers 3-12 Auto Select Media T ype 3-12 T ranscend PC Link Smar tAgent Driver A gents 3-13 Desktop Management Interface 3-13 4 P ERFORMING T ROUBLESHOOTING AND D IAGNOSTIC T ESTS T roubleshooting with the Diagnostic T ests 4-1 Before Running the T ests 4-2 T ypes of T ests 4-2 Starting the Diagnostic Progra[...]

C S PECIFICATIONS Adapter Specifications C-1 Network Inter face C-1 Physical Dimensions C-1 Environmen tal Operating Range C-1 Po wer Requirements C-1 D T ECHNICAL S UPPORT On-line T echnical Services D-1 3Com Bulletin Board Ser vice D-1 Access by Modem D-1 Access by ISDN D-2 W orld Wide W eb Site D-2 3ComF orum on CompuServe D-2 3ComF acts Automa[...]

F IGURES 1-1 10/100BASE-T4 PCI Adapter 1-2 2-1 PCI Computer with PCI and EISA S lots 2-3 2-2 Connecting T wisted-P air Cable 2-4 3-1 AutoLink Information Screen 3-7 3-2 Main Menu 3-7 A-1 RJ-45 Connector Pin Assignments A-6 B-1 Multiple Adapter Option Configuration B-3 B-2 Changing Adapter Options B-4[...]

T ABLES 1 T ext Con ventions 2 2 Notice Icons 2 3-1 Summary of Driver Loading Procedures 3-1 3-2 Accessing DOS from Other Operating Systems 3-3 4-1 Adapter and Diagnostic P rogram Names (10 Mbps Adapter Only) 4-6 4-2 Fast EtherLink 10/100BASE-T4 PCI Adapter LEDs 4-10 B-1 Option Settings B-2[...]

A BOUT T HIS G UIDE Introduction This guide explains how to install the 3C om â F ast EtherLink â P arallel T ask ing â 10/100BASE-T4 PCI adapter . Also included is information about loading drivers , troubleshooting the adapter , and using the diagnostic tests if a malfunction occurs. How to U se This Guide The follo wing table shows where to ?[...]

2 A BOUT T HIS G UIDE C on ven tions The follo wing tables list text and icon conventions that are used throughout this guide: T able 1 T ext Conventions Convention Description Text represented as screen display This typeface is used to represent displays that appear on your terminal screen, for example: NetLogin: Text represented as commands This [...]

1 I NTRODUCTION The 3Com â F ast EtherLink â Parallel T ask ing â 10/100BASE-T4 PCI adapter is a 32-bit adapter f or use in a personal computer with a P eripheral Component Interc onnect (PCI) computer bus. It operates whether or not bus mastering is enabled. This adapter (model number 3C595-T4) is a dual-speed adapter that can be connected to a[...]

1-2 C HAPTER 1: I NTRODUCTION The 10/100BASE-T4 PCI adapter connects your PCI-compliant personal computer to an Ethernet netw ork wired with IEEE 802.3 standard 10BASE-T or 100BASE-T4 twisted-pair cable. F or information on the IEEE 802.3 standar d as it relates to twisted-pair cable , refer to Appendix A. The adapter inter operates with all 10BASE[...]

Adapter Features 1-3 Check the documentation provided with the PCI c omputer to locate the bus master slots . Adapt er F eatures The 10/100BASE-T4 PCI adapter provides the f ollowing features: ■ P arallel T ask ing architecture with bus mastering for high throughput and low processor utilization ■ Automatic selection of 10 or 100 Mbps network o[...]

1-4 C HAPTER 1: I NTRODUCTION PCI T echnology The PCI local bus is a high-performance bus that provides a processor-independent data path between the CPU in a PC and high-speed peripherals. This interconnect mechanism is designed specifically to accommodate multiple high- per formance peripheral devices that support network ing and disk subsystems[...]

2 I NSTALLING THE A DAPTER This chapter discuses the f ollowing topics: ■ Inspecting the F ast EtherLink 10/100BASE-T4 PCI adapter ■ Installing the boot PROM ■ Inser ting the adapter ■ Connecting to the network Inspecting the Adapter Before installing the adapter in y our computer , you should visually inspect it for damage that might have [...]

2-2 C HAPTER 2: I NSTALLING THE A DAPTER 2 V erify that you hav e received all it ems listed in step 1, and inspect each item for damage. If you find any omissions or damage , contact your network supplier and the carrier that delivered the package. Installing the Boot PROM The boot PROM is optional and can be purchased separately . If you are ins[...]

Connecting to the Network 2-3 Figure 2-1 PCI Computer with PCI and EISA Slots The adapter’ s back plate should be flush with the computer’ s chassis. Be sure that the adapter’ s connector fingers are completely seated in the slot. 6 Replace the computer co ver and rec onnect all previously connected cables. Refer to the documentation pr ovi[...]

2-4 C HAPTER 2: I NSTALLING THE A DAPTER F or both 10BASE-T and 100BASE-T4 Ethernet networks , the F ast EtherLink PCI adapter uses Category 3, 4, or 5 unshielded twisted-pair (UTP) cable. Refer t o Appendix A for more information on cabling . F igure 2-2 shows the backplate of an installed adapter with its RJ-45 connector . Figure 2-2 Connecting T[...]

Connecting to the Network 2-5 100BASE-T4 connections use all 4 pairs of wire normally contained in a bundle of Category 3, 4, or 5 UTP cable . The “ straight thr ough ” connection should be made from the F ast EtherLink PCI adapter through the cable and c onnectors to the hub . No crossover in the c able is required . Refer to Appendix A for RJ[...]

3 L OADING THE N ETWORK D RIVERS This chapter describes how t o load the network drivers required to let the 3C595-T4 PCI adapt er operate with your network operating system. This information is arranged according to the follo wing topics: ■ Summar y of driver loading procedures ■ Using the EtherDisk diskette ■ Accessing DOS ■ Loading netw [...]

3-2 C HAPTER 3: L OADING THE N ETWORK D RIVERS Using the EtherDisk Disk ette The EtherDisk diskette contains the latest versions of the network drivers a vailable when 3Com shipped the adapt er . It also contains other impor tant information concerning F ast EtherLink and EtherLink III adapters and their configuration. T o obtain network operating[...]

Using Windows 95 3-3 installing the drivers. T able 3-2 provides the procedur es to use to access DOS from v arious operating systems. Using W indow s 95 If you have Windows 95 running on y our computer , you should load the driver from the EtherDisk diskette. F ollow these steps: 1 After inserting the F ast EtherLink PCI adapter and connecting it [...]

3-4 C HAPTER 3: L OADING THE N ETWORK D RIVERS b In the panel at the bottom of the dialog box, type the drive name and pathname from which Windows 95 should copy the manufacturer ’ s files. (An information file on the diskette tells Windows 95 where to find the inf ormation it needs, for example A:.) 5 Click OK. This imports the driver from t[...]

Using NetWare ODI 3-5 6 Double-click the adapter name to display a description of the adapter and its current status. The next dialog box confirms that the adapter is working properly . 7 Click the Cancel button to leav e each dialog box and return to the C ontrol P anel. Using NetW are ODI This section describes how to load NetW are drivers in th[...]

3-6 C HAPTER 3: L OADING THE N ETWORK D RIVERS AutoLink Installa tion T o use the AutoLink program t o install NetW are DOS ODI client software on a PC with a single adapter , follow these steps: 1 Make sure that you ha ve booted the computer under DOS, version 3.1 or lat er , and that your computer is connected to the network, as detailed in Chapt[...]

Using NetWare ODI 3-7 5 Read the screen and press [Enter]. 6 When the main menu screen shown in F igure 3-2 appears, select NetWar e DOS ODI Client , and press [Enter]. Figure 3-1 AutoLink Information Scr een Figure 3-2 Main Menu ESC=Cancel This option will install a complete DOS ODI client. [ENTER]=Continue [ESC]=Exit Program 3Com's auto i[...]

3-8 C HAPTER 3: L OADING THE N ETWORK D RIVERS Auto installation ma y take a few moments. Several messages appear while the AutoLink program is running . A final message indicating successful installation appears. If you experience problems that occur only when using the AutoLink progr am, access the A UTOLINK.L OG file, as described in the secti[...]

Using NetWare ODI 3-9 4 When the AutoLink installation is c omplete , remove the diskette. 5 T urn off the computer , install the second adapter , and connect the network cable to the adapter . 6 T urn on the computer and access the C:NWCLIENT subdirectory . 7 In the C:NWCLIENT subdirectory access the NET .CFG file by typing: edit net.cfg 8 Scro[...]

3-10 C HAPTER 3: L OADING THE N ETWORK D RIVERS 10 Repeat step 9 for an y additional adapters that you may hav e installed. 11 Reboot the computer . F inding the Adapter’ s P ort Number When working in a NetWar e envir onment with multiple adapters in a client computer , you must know each adapter ’ s por t number . T o find the adapter ’ s [...]

Loading NDIS Drivers 3-11 One or More A dapters in a Ser ver If you are running NetW are and have installed one or more adapters in a PCI computer that is functioning as a ser ver , follow the instructions in the readme file on the EtherDisk diskette to load the NetW are 4.x server driver . The 3C 59X EtherDisk diskette contains the NetW are 4.x s[...]

3-12 C HAPTER 3: L OADING THE N ETWORK D RIVERS 4 Fr om the display ed list of network operating sy stems select the appropriate oper ating system f or your en vironment and press [Enter]. 5 F ollow the instructions on the subsequent screen to load the driver . Updating NDIS Driv ers T o update one of the follo wing drivers, complete these steps . [...]

Transcend PC Link SmartAgent Driver Agents 3-13 If you have one of these driv ers installed, as soon as you connect a network cable to the system, the Auto Select Media Type function detects the type of cable mak ing the connection and automatically selects that media t ype, which for the 3C595-T4 PCI adapter w ould be one of the UTP cable types, i[...]

4 P ERFORMING T ROUBLESHOOTING AND D IAGNOSTIC T ESTS This chapter explains how to isolat e and solve 10/100BASE-T4 PCI adapter problems. Make sure that the adapter is c orrectly installed. (See Chapter 2 for installation instructions.) This chapter contains inf ormation about the following topics: ■ Diagnostic tests overview ■ Star ting the di[...]

4-2 C HAPTER 4: P ERFORMING T ROUBLESHOOTING AND D IAGNOSTIC T ESTS Before Running the T ests When the DOS operating system first loads, it execut es the AUT OEXEC.BA T and CONFIG.SYS files. These files are user- definable files that set up the computer envir onment and may also load memory managers and drivers into memor y . If you are using [...]

Starting the Diagnostic Program 4-3 Starting the Diagnostic Progr am Always run diagnostic tests with no device driv ers or memory managers (EMM386.EXE and HIMEM.SYS) installed. Whenever you plan to run the diagnostic tests , you must first start your computer from a DOS disk ette containing no device driv ers, or you must exit to DOS if you hav e[...]

4-4 C HAPTER 4: P ERFORMING T ROUBLESHOOTING AND D IAGNOSTIC T ESTS 2 Press [Ent er] to start the tests. Group 1 tests (the default setting) run ten times unless y ou specify other wise. The test results are display ed on the screen in the Results column. T o run the tests continuously , go to the Repetitions box on the T est Setup screen, and sele[...]

Starting the Diagnostic Program 4-5 Setting Up an Echo Server T o test 10 Mbps operation of the 10/100BASE-T4 PCI adapter , use a computer as an echo ser ver that contains an EtherLink III adapter or another 10/100BASE-T4 PCI adapter . T o test for 100 Mbps operation of the 10/100BASE-T4 PCI adapter , use another F ast EtherLink PCI adapter in the [...]

4-6 C HAPTER 4: P ERFORMING T ROUBLESHOOTING AND D IAGNOSTIC T ESTS Starting the Group 3 T est T o run the Group 3 test on a F ast EtherLink PCI adapter , follow these st eps: 1 Star t the Configura tion and Diagnostic Progr am. This program must be on the computer containing the adapter you want to t est. 2 Select T est Setup from the T est menu.[...]

Getting Help If a Test Fails 4-7 Getting Help If a T est F ails If any test fails , you can get additional information as follows: 1 Highlight the test that failed in the Run T ests dialog box and press [Enter]. 2 Highlight the Zoom button and press [Enter]. If the diagnostic tests fail, the adapter may not be defective. The problem may be caused b[...]

4-8 C HAPTER 4: P ERFORMING T ROUBLESHOOTING AND D IAGNOSTIC T ESTS ■ If you are running the Group 3 test , make sure that the adapter is connected to a properly cabled and inactive network and that an echo server is set up on the network. ■ Replace the failed adapter with a working adapter and run the diagnostic tests again. If the working ada[...]

Changing the Test Setup 4-9 Changing the T est Setup T o change the test parameters , follow these steps: 1 Choose T est S etup from the T est menu in the main window of the Configur ation and Diagnostic Pr ogram, or select the T est Setup button in the Run T ests dialog box. 2 Press [ T ab] to highlight any of the fields within the T est Setup d[...]

4-10 C HAPTER 4: P ERFORMING T ROUBLESHOOTING AND D IAGNOSTIC T ESTS Check the length and rating of the UTP cable connection. Make sure the cable segment is compliant with 10BASE-T or 100BASE-T4 specifications. Maximum length for all types of cabling for this adapter is 100 met ers (330 feet). Make sure that you have installed the corr ect driver [...]

A C ABLING This appendix discusses the follo wing topics: ■ Adapter cabling r equirements ■ T wisted-pair cable and the EIA/TIA cable categories ■ 10BASE-T operation and specifications ■ 100BASE-T specifications, including 100BASE-TX, 100BASE-T4, and 100BASE-FX ■ Pin assignments for the RJ-45 connector Adapt er Cabling Requir ements Whe[...]

A-2 A PPENDIX A: C ABLING T wisted-Pair C able T wisted-pair cable consists of copper wires surrounded by an insulator . T wo wires are twisted together (the twisting prevents interference problems) to f orm a pair , and the pair forms a circuit that can transmit data. A cable is a bundle of one or more twisted pairs surrounded b y an insulator . U[...]

10BASE-T Operation A-3 10BASE-T Opera tion 10BASE-T is the Institute of Electrical and Elec tronics Engineers (IEEE) 802.3 standard for E thernet signaling over unshielded twisted-pair wire at 10 Mbps. Ethernet, as the most widely-used network protocol, uses 10BASE-T as its primar y cabling scheme. Ethernet’ s characteristics include: ■ A data [...]

A-4 A PPENDIX A: C ABLING 100BASE-T Standar d The 100BASE-T standard defines a network ar chitecture based on the 10BASE-T standard that retains almost all of the original IEEE 802.3 Ethernet specification, while greatly increasing the network’ s overall throughput. 100BASE-T has the following similarities t o 10BASE-T: ■ Uses the same CSMA/C[...]

100BASE-T Standard A-5 100BASE-T4 Operation 100BASE-T4 is the IEEE 802.3 specification for Ethernet signaling for 100 Mbps ov er four pairs of Cat egor y 3 or better UTP cable.This ph ysical layer standard was specifically defined to allow 100BASE-T to be deplo yed over the lar ge installed base of Category 3 voice-grade UTP . 100BASE-T4 uses fo[...]

A-6 A PPENDIX A: C ABLING RJ-45 C onnector Pin Assignments F igure A-1 shows the RJ-45 connector pin assignments. Figure A-1 RJ-45 Connector Pin Assignments T4 T4 8 7 6 5 4 12 345678 3 2 1 BI_DI4–(8) BI_DI4+(7) RD–(6) BI_DI3–(5) BI_DI3+(4) RD+(3) TD–(2) TD+(1)[...]

B C ONFIGURING S OFTWARE S ETTINGS The F ast EtherLink 10/100BASE-T4 PCI adapter is automatically configured by the PCI’ s computer ’ s BIOS with the following basic configuration parameters: ■ I/O P or t Address ■ Interrupt Request L evel (IRQ) This is done automatically when the computer with the installed F ast EtherLink PCI adapter is[...]

B-2 A PPENDIX B: C ONFIGURING S OFTWARE S ETTINGS Changing Software Settings * This option specifies whether to optimize the network driver for a normal environment, a minimized CPU utilization environment, or a maximized network performance environment. You may choose to use a larger percentage of CPU resources under DOS in order to improve networ[...]

Changing Software Settings B-3 5 When the auto installation screen appears , as shown in Figur e 3-1 press [Enter]. 6 When the main menu appears with a list of options, as shown in F igure 3-2, selec t Configuration/Diagnostic/ T roubleshooting . 7 When the Configura tion and Diagnostic screen appears, select Configuration and Diagnostic Pr ogra[...]

B-4 A PPENDIX B: C ONFIGURING S OFTWARE S ETTINGS In both cases, a screen similar to the one shown in F igure B-2 appears, showing the parameters f or the selected adapter . Figure B-2 Changing Adapter Options 9 Press [ T ab] to highlight the main dialog box, and use the arrow keys t o highlight one of the parameter options. Press [Ent er]. A secon[...]

Changing Software Settings B-5 Y ou must highlight OK and press [Enter] to save the settings . If you want to use the same settings on other adapters , you can sav e the configur ation settings to a file. Select Save under F ile Options in the Adapter Configur ation dialog box. F or example, type: D:CONFIG3C595.SET This saves the settings to t[...]

C S PECIFICATIONS This appendix lists the specifications for the F ast EtherLink 10/100BASE-T4 PCI adapter . I t also contains pin assignments for the adapter’ s RJ-45 connector . Adapt er Specifications Network Interface Phy sical Dimensions Envir onmental Opera ting Range P ower Requir ements 10 Mbps Ethernet 10BASE-T Ethernet IEEE 802.3 indu[...]

D T ECHNICAL S UPPORT 3Com pro vides easy access to technical support information through the variety of services described in this appendix. On-line T echnical Ser vices 3Com off ers worldwide product suppor t seven days a w eek, 24 hours a day , through the following on-line syst ems: ■ 3Com Bulletin Board Service (3ComBBS) ■ W orld Wide W eb[...]

D-2 A PPENDIX D: T ECHNICAL S UPPORT Acc ess by ISDN ISDN users can dial-in to 3Com BBS using a digital modem for fast access up to 56 Kbps . T o access 3ComBBS using ISDN, dial the following number: (408) 654-2703 W orld Wide W eb Site Access the latest netw orking information on 3Com ’ s W orld Wide Web site by ent ering our URL into your Inter[...]

Support from Your Network Supplier D-3 3C omF ac ts Automated F ax Ser vice 3Com C orporation ’ s interactive fax ser vice, 3ComF acts, provides data sheets , technical ar ticles, diagrams, and troubleshooting instructions on 3Com products 24 hours a day , seven days a week. Call 3ComF ac ts using your touch-tone telephone . International access [...]

D-4 A PPENDIX D: T ECHNICAL S UPPORT ■ Details about recent configuration changes, if applicable If you are outside the U.S. and Canada, contact your local 3Com sales office to find y our authorized service provider : Returning Pr oducts for Repair * These numbers are toll-free. A product sent directly to 3Com for r epair must first be assign[...]

G LOSSARY 10BASE-T The IEEE 802.3 standard f or a 10 Mbps baseband network on twisted-pair cable. 100BASE-FX The IEEE 802.3 standard f or a 100 Mbps baseband network over two optical fibers . 100BASE-T The IEEE 802.3 standard f or a 100 Mbps baseband network over twisted-pair cable . 100BASE-T4 The IEEE 802.3 standard f or a 100 Mbps baseband netw[...]

2 G LOSSARY Auto Selec t Media T ype A utility that detects the t ype of network cable connected to the adapter and automatically selects that connection for packet transmission. This func tion is implemented by all NetW are ODI, Windows for Workgr oups, NDIS 2.01, Windows NT , and Windows 95 drivers. Broadcast architecture The signaling scheme in [...]

G LOSSARY 3 EIA/TIA Electronics Industries Association/T elecommunications Industries Association. The organization that develops wiring standards for the t elecommunications industr y . T he EIA/TIA 568 specification applies to all unshielded twisted-pair wiring schemes that work with Ethernet, T ok en Ring, ISDN and other networks. EISA Extended[...]

4 G LOSSARY MAC Media access control. The operational scheme that gives each network node orderly access to the netw ork cable. CSMA/CD is a MAC prot ocol that determines how nodes on the network share access to the cable . NDIS Network Driver Interface Specification. Defines the LAN M anager network driver archit ecture and inter faces that let [...]

G LOSSARY 5 STP Shielded twisted-pair cable. T wisted-pair cabling with an overall shield to pr event the entry of outside inter ference, and individually shielded and twisted-pairs to prevent crosstalk. T ranscend 3Com ’ s integrated network management solution based on groups of logically related devices and including a v ariety of network mana[...]

I NDEX Numerics 10/100BASE-T4 PCI adapter 1-3 100BASE-FX description A-5 100BASE-T media specifications A-4 standard A-4 100BASE-T4 description A-5 F ast Ethernet 1-1 100BASE-TX description A-4 F ast Ethernet 1-1 10BASE-T Ethernet, 10 Mbps 1-1 specifications A-3 three-repeater rule A-3 twisted-pair cable 1-2 , A-3 3C595.SET B-5 3C595-T4 1-1 3C59X[...]

2 I NDEX D DEC P A THWORKS 3-11 default option settings B-2 Desktop Management Inter face (DMI) 1-3 , 3-13 diagnostic program, star ting 4-3 diagnostic tests 4-1 changing test setup 4-9 echo ser ver 4-5 failed 4-7 for specific adapters 4-6 Group 1 4-2 , 4-3 , 4-4 Group 2 4-2 Group 3 (Echo Server) 4-2 , 4-4 starting 4-3 DOS 3-6 accessing 3-2 DOS ND[...]

I NDEX 3 network connecting to 2-3 management 3-13 Network Driver Optimization option setting B-2 network supplier support D-3 NWCLIENT subdirectory 3-9 O on-line help 3-4 on-line technical services D-1 option settings changing B-2 OS/2 3-3 NDIS driver 3-12 P package contents 2-1 P arallel T asking, benefits of 1-3 P A THWORKS 3-11 PCI 1-1 slots 2[...]

4 I NDEX W Windows 3.X 3-3 Windows 95 confirming adapter installation 3-4 loading the driver 3-3 Windows for Workgr oups 3-12 Windows NT 3-12 wiring requirements 100BASE-T4 2-4 10BASE-T 2-4[...]

LIMITED W ARRANTY HARDW ARE: 3Com warrants its hardware products to be free from defects in workmanship and materials, under normal use and service, for the following lengths of time from the date of purchase from 3Com or its Authorized Reseller: Internetworking products One year Network adapters Lifetime Ethernet stackable hubs and unmanaged Ether[...]

3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT THE ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY CUSTOMER'S OR ANY THIRD PERSON'S MISUSE, NEGLECT, IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS TO REPAIR, OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY ACCI[...]

FCC CLASS B C ERTIFICATION 3Com Corporation Model No: 3C595-T4 FCC ID: DF63C595-T4 Made in U.S.A. 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 u[...]

CE NOTICE Marking by the symbol indicates compliance of this equipment to the EMC directive of the European Community. Such marking is indicative that this equipment meets or exceeds the following technical standards: ■ EN 55022—“Limits and Methods of Measurement of Radio Interference Characteristics of Information Technology Equipment.” ?[...]