3Com EtherLink 3C590 инструкция обслуживания

® E THER L INK  III P ARALLEL T ASKING  PCI B US M ASTER N ETWORK A DAPTERS U SER G UIDE Members of the 3Com EtherLink III family of adapters Part No. 09-0597-001 Published April 1995[...]

3Com C orporation ■ 5400 Bayfront Plaza ■ Santa Clara, California ■ 95052-8145 © 3Com Corporation, 1995. All rights reserved. No par t of this documentation ma y be reproduced in an y form or by any means or used to make any deriv ative work (such as translation, transformation, or adaptation) without permission from 3Com Corporation. 3C om [...]

® L IFETIME W ARRANTY 3Com ’ s EtherLink  , T okenLink  III 16/4, and FDDILink  adapters have a Lif etime W arranty . T o ensure the ver y best 3C om ser vice and support, take the time to complete the product registration card. Any defective 3C om adapter will be repaired or replaced , at 3Com ’ s option, for as long as the adapter r[...]

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. addr ess on the front of the card . ■ Asia 3Com Asia Ltd., Marketing Department Room 1009, 10th Floor Asia Pacific Finance Tower, Citibank Plaza 3 Gar[...]

C ONTENTS A BOUT T HIS G UIDE Introduction i How to Use This Guide i Con ventions ii 1 I NTRODUCTION F eatures 1-3 PCI T echnology 1-3 2 I NSTALLING THE PCI A DAPTER Before Y ou Begin 2-1 Installing the Adapter 2-2 Connecting to the Network 2-3 Connecting to the On-board Transc eiver 2-3 Connecting to Thin Ethernet Cable 2-3 Connecting to T wisted-[...]

Multiple Adapters in a Server 3-10 Driver Installation with NetW are 3.11 3-10 Driver Installation with NetW are 3.12 3-11 Non-NetW are Environments 3-11 NDIS Drivers 3-12 Additional Drivers 3-12 Using T ranscend PC Link SmartAgent Software 3-12 Desktop Management Interface 3-13 4 P ERFORMING T ROUBLESHOOTING AND D IAGNOSTIC T ESTS T roubleshooting[...]

C T ECHNICAL S UPPORT On-line T echnical Ser vices C-1 3Com Bulletin Board Service C-1 W orld Wide W eb Site C-2 Ask3Com on C ompuSer ve C-2 3ComF acts Automated F ax Ser vice C-2 Support from Y our Network Supplier C-4 Returning Pr oducts for Repair C-5 G LOSSARY I NDEX L IMITED W ARRANTY FCC C LASS B C ERTIFICATION VDE C LASS B C OMPLIANCE[...]

F IGURES 1-1 3C590 Adapter Backplates 1-2 2-1 PCI and EISA Bus Connectors in a PCI C omputer 2-2 2-2 Connecting Thin Ethernet Cable 2-4 2-3 Slide Latch 2-5 2-4 Connecting the AUI Cable 2-5 3-1 AutoLink Information Screen 3-7 3-2 Main Menu 3-7 4-1 Assembling a Loopback Plug 4-4 A-1 Main Menu A-3 A-2 Main Window with Multiple Adapters A-4 A-3 Config[...]

T ABLES 1 T ext Conv entions ii 2 Notice Icons ii 1-1 3C590 PCI Adapter C able and Connector Specifications 1-2 2-1 Connectors for 3C590 PCI A dapters 2-3 3-1 Accessing DOS from Other Operating Systems 3-2 4-1 Diagnostic Pr ograms 4-6 A-1 Option Settings A-2 B-1 AUI C onnec tor Pin A ssignments B-2[...]

A BOUT T HIS G UIDE Introduction This guide describes how to install the f ollowing 3Com  EtherLink  III P arallel T asking  10 Mbps PCI bus master network adapters: ■ 3C590-C OMBO (10BASE-T , thin coax, and thick coax) adapter ■ 3C590-TPO (10BASE-T ) adapter Also included is information about installing network drivers , troubleshooti[...]

ii 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  E therLink  III P arallel T asking  adapters are a family of third-generation Ethernet adapters . This family includes the 32-bit bus master P eripheral Component Interconnect (PCI)10 Mbps Ethernet network adapt er , which conforms to the PCI 2.1 specification. This guide contains installation and diagnostic info[...]

1-2 C HAPTER 1: I NTRODUCTION Figure 1-1 3C590 Adapter Backplates The 3C590 PCI adapter can only be installed in computers containing PCI bus master expansion slots. Be aware that not all PCI slots in a PCI computer may be bus master slots . Check the documentation provided with the PCI computer y ou are using to determine which PCI slots are bus m[...]

Features 1-3 F eatures The 3C590 PCI adapter supports the following featur es: ■ AutoLink  auto installation software , which installs and configures all Novell  NetW are  DOS ODI client software into your operating system ■ Auto Select Media T ype capability , which enables drivers to automatically detect the type of media connec tor[...]

1-4 C HAPTER 1: I NTRODUCTION The PCI specification supports the following features: ■ High per f ormance. T he PCI local bus runs at a clock speed of 33 MHz and employs a 32-bit data bus that supports multiple peripheral components and add-in cards at a peak bandwidth of 132 MBps, up to an order of magnitude greater than that of other PC buses [...]

2 I NSTALLING THE PCI A DAPTER This chapter describes how to install the 3C590 PCI adapter in your computer . I t includes instructions for inser ting the adapter into the computer and connecting the adapter to the network using the on-board transceiver or an external transceiver . After installing the adapter , you can load the network driv ers, a[...]

2-2 C HAPTER 2: I NSTALLING THE PCI A DAPTER Installing the A dapter T o inser t the adapter into the computer , follow these steps: 1 T urn off the computer and disconnect the unit from its power sour ce. 2 Remove all jew elr y from y our hands and wrists. 3 Select an appropriate expansion slot and remov e its expansion cov er plate. 4 Insert the [...]

Connecting to the Network 2-3 slower than access to the PCI bus . In some cases this is slow enough to cause the EISA bus to time out and hang the computer . Refer to the documentation pr ovided by the computer’ s manufacturer for details on installing expansion boards. C onnecting to the Network Y ou must connect the adapter to the network befor[...]

2-4 C HAPTER 2: I NSTALLING THE PCI A DAPTER Figure 2-2 Connecting Thin Ethernet Cable 2 Align the T connector ’ s slots with the pegs on the BNC connector . 3 Push the T connector in and twist it clockwise until it stops. The next step is to load the drivers , as explained in Chapter 3. Connecting to T wisted-pair Cable The 3C590-C OMBO and 3C59[...]

Connecting to the Network 2-5 C onnecting to an Ex ternal T ransc eiver Y ou can install AUI-equipped adapters and , by employing an external transceiver , use either thin or thick coax, fiber-optic, or twisted-pair cabling . F ollow these steps to connect to an external transceiver: 1 Locat e the adapter ’ s AUI connector and mo ve the slide la[...]

2-6 C HAPTER 2: I NSTALLING THE PCI A DAPTER Figure 2-4 Connecting the AUI C able 3 Move the slide la tch to the closed position to lock the cable in place. 4 Connect the other end of the A UI cable to the ex ternal transceiv er . The next step is to load the drivers , as explained in Chapter 3. Using A uto Select Media T ype The Auto Select Media [...]

Using Auto Select Media Type 2-7[...]

2-8 C HAPTER 2: I NSTALLING THE PCI A DAPTER[...]

3 I NSTALLING THE N ETWORK D RIVERS This chapter describes how t o install the network drivers required to let the 3C590 PCI adapt er operate with your network operating system. If you are running NetW are 2.x, 3.1x, or 4.x, you can use 3Com ’ s AutoLink auto installation feature , which automatically installs all the NetW are DOS ODI client soft[...]

3-2 C HAPTER 3: I NSTALLING THE N ETWORK D RIVERS Acc essing DOS The 3Com pr ogram is a DOS-based program that loads network drivers , modifies some adapter parameters, and runs diagnostic tests on the adapter . If you are using an operating inter face other than DOS, such as OS/2  or Windows 3.x, you must exit from that interface before instal[...]

Installing NetWare Drivers 3-3 F inding the Adapter’ s Port Address When operating in a NetW are environment, you must obtain the adapter ’ s por t addr ess before installing the client driver in a multiple adapter situation or before installing one or more server drivers. T o find the appropriate port address, follow these st eps: 1 Access th[...]

3-4 C HAPTER 3: I NSTALLING THE N ETWORK D RIVERS AutoLink Requir ements 3Com ’ s AutoLink auto installation software is designed to automatically install all necessary NetWare DOS ODI client software, including dr ivers . It also modifies the CONFIG.SYS and AUT OEXEC.BA T files. It automatically logs on to the ser ver and updat es the client s[...]

Installing NetWare Drivers 3-5 Detailed Installation F or a more detailed description of the installation of a single 3C590 PCI adapter as a NetW are DOS ODI client, follow the steps below . Y ou can use the A UTOLINK.CFG file to contr ol the AutoLink process . The AUTOLINK.CFG file in the r oot directory contains default settings and description[...]

3-6 C HAPTER 3: I NSTALLING THE N ETWORK D RIVERS The AutoLink inf ormation screen appears, as shown in F igure 3-1. 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]. Auto installation ma y take a few moments. Several messages appear while the AutoLink p[...]

Installing NetWare Drivers 3-7 Figure 3-1 AutoLink Inf ormation Screen Figure 3-2 Main Menu ESC=Cancel This option will install a complete DOS ODI client. [ENTER]=Continue [ESC]=Exit Program 3Com's auto installation software (AutoLink) automatically configures your adapter and workstation for use as a NetWare client. To use AutoLink: * Have on[...]

3-8 C HAPTER 3: I NSTALLING THE N ETWORK D RIVERS Multiple Adapters in a C lient If you are running NetW are and have installed multiple adapters in a PCI computer , follow these steps: 1 With the main menu display ed (Figur e 3-2), select Network Drivers. 2 When the Network Drivers scr een appears, select Install Novell NetW are Drivers. 3 When th[...]

Installing NetWare Drivers 3-9 Driver Installa tion with NetW are 3.11 T o install the 4.x ser ver driver while running NetW are 3.11, follow these st eps: 1 Copy the c ontents of the appropriate NET W ARE subdirectory to the boot partition of the ser ver ’ s hard disk. 2 When you start the ser v er , enter the following commands: load C:LSLENH.[...]

3-10 C HAPTER 3: I NSTALLING THE N ETWORK D RIVERS Multiple Adapters in a Server If you are running NetW are and have installed multiple adapters in a PCI computer that is functioning as a ser ver , follow the instructions in this section. The 3C59X EtherDisk diskette contains a NetW are 4.x ser v er driver (3C59X.LAN) and the NetW are Loadable Mod[...]

Non-NetWare Environments 3-11 Driver Installa tion with NetW are 3.12 T o install the 4.x ser ver driver while running NetW are 3.12, follow these st eps: 1 Copy the c ontents of the appropriate NET W ARE subdirectory to the boot partition of the ser ver ’ s hard disk. 2 When you start the ser v er , enter the following commands: load C:3C59X.LA[...]

3-12 C HAPTER 3: I NSTALLING THE N ETWORK D RIVERS NDIS Drivers If you have installed NDIS driv ers in a computer with multiple 3Com adapters , you must specify the slot number for each adapter as documented in the PRO TOC OL.INI file on the 3C59X EtherDisk diskette. T he file is located on the star tup diskette or the hard drive. The NDIS driver[...]

Desktop Management Interface 3-13 These driver agents permit remot e management of PCs and the 3C590 PCI adapter through use of 3C om ’ s T ranscend network management application software , such as T ranscend W orkGroup Manager for Windows, or through any other SNMP manager system. W orkGroup Manager sof twar e integrates hub and adapter managem[...]

3-14 C HAPTER 3: I NSTALLING THE N ETWORK D RIVERS[...]

4 P ERFORMING T ROUBLESHOOTING AND D IAGNOSTIC T ESTS This chapter explains how to isolat e and solve 3C590 PCI adapter problems. Make sure that the adapter is c orrectly installed. (S ee Chapter 2 for installation instructions.) T roubleshooting with the Diagnostic T ests The three diagnostic tests on the 3C59X EtherDisk diskette check the adapter[...]

4-2 C HAPTER 4: P ERFORMING T ROUBLESHOOTING AND D IAGNOSTIC T ESTS The Group 2 test (f or the 3C590-COMBO adapter only , not the 3C590-TPO adapter) checks the adapter’ s ability to transmit and receive data via the internal transceiv er . The Group 3 test (the E cho Exchange T est) tests the adapter ’ s ability to transmit and receive data whi[...]

Starting the Diagnostic Program 4-3 Running the Group 1 T ests The Group 1 tests include: ■ Register Access T est ■ EEPROM T est ■ FIFO Loopback T est ■ Ethernet Cor e Loopback T est ■ Encoder/Decoder Loopback T est ■ Interrupt T est F or a description of each Group 1 test, access Help by pressing [F1]. When the Help scr een appears, ta[...]

4-4 C HAPTER 4: P ERFORMING T ROUBLESHOOTING AND D IAGNOSTIC T ESTS Running the Group 2 T est The Group 2 test is called the Netw ork Loopback T est. I t tests the 3C590-C OMBO adapter ’ s abilit y to transmit and r eceive data via the internal transceiver . T his test requires installation of a loopback plug at the adapter ’ s BNC transceiver [...]

Starting the Diagnostic Program 4-5 3 Select T est Setup from the T est menu. 4 Enable the Group 2 test. Highlight <OK> and press [Enter]. 5 Go to the Run T ests dialog box t o star t the tests . 6 After the test is complet ed: a Exit the Configuration and Diagnostic P rogram. b Remove the loopback plug . Running the Group 3 T est The Group [...]

4-6 C HAPTER 4: P ERFORMING T ROUBLESHOOTING AND D IAGNOSTIC T ESTS 3 Star t the diagnostic progr am on the echo ser v er . The diagnostic program that you use depends on the adapter that is installed in the echo server . After the system prompt of the drive containing the C onfiguration and Diagnostic Pr ogram, enter the name of the appropriate p[...]

Getting Help If a Test Fails 4-7 5 After the test is complet ed: a Exit the program on the echo server . b Exit the Configuration and Diagnostic P rogram. Getting Help If a T est F ails If any test fails , you can get additional information as follo ws: ■ Highlight the test that failed in the Run T ests dialog box and press [Enter]. ■ Highligh[...]

4-8 C HAPTER 4: P ERFORMING T ROUBLESHOOTING AND D IAGNOSTIC T ESTS per f ormance in a bus master slot, but will work in a non-bus master slot. Refer to your computer documentation. The original slot may be def ective. 4 Make sure that y ou booted your computer under DOS version 6.x or lat er , and that no device drivers or memory managers are load[...]

Getting Help If a Test Fails 4-9 10 Install the adapter in another functioning computer and run the tests again. Y our computer may be defective. If the adapter passes the tests in the second computer , contac t the r eseller or manufacturer of the original computer . 11 If you experienc e problems that occur only when using the AutoLink pr ogram, [...]

4-10 C HAPTER 4: P ERFORMING T ROUBLESHOOTING AND D IAGNOSTIC T ESTS c In the Repetitions box, specify the number of times you want to run the tests , or use the arrow keys to select the Continuous option. d In the Errors box, press the [Space Bar] to select or deselect the Halt on Error parameter . 4 When you are sa tisfied with the new test setu[...]

Miscellaneous Checks 4-11 If you are experiencing any pr oblems, first mak e sur e that your hub complies with the 10BASE-T specifications and then check the LED . T he meaning of LED activit y is given belo w : ■ If the LED is on, the link beat is work ing . ■ If the LED is off , the link beat has not been established or there is a problem w[...]

4-12 C HAPTER 4: P ERFORMING T ROUBLESHOOTING AND D IAGNOSTIC T ESTS[...]

A S OFTWARE O PTION S ETTINGS When you insert one or more 3C590 PCI adapters in a PCI-compliant PC, the adapter is automatically configured . The PCI automatic configuration utility sets the I/O P or t Address and Int errupt Request Level paramet ers. Y ou cannot change these settings. It also enters default software settings for these options: ?[...]

A-2 A PPENDIX A: S OFTWARE O PTION S ETTINGS ■ Y ou want to deactivate the Auto Select Media Type option. (Select this option if you are unsure of the media connection to your adapter .) ■ Y ou want to change the t ype of network connector . ■ Y ou want to enable full duplex. T able A-1 lists each sof twar e option, the default setting, and t[...]

Changing Software Option Settings A-3 3 T ype at the prompt: INSTALL [Enter] 4 The first time you use the diskett e to install an adapter , a license screen appears. T o accept the terms and conditions of the 3Com end-user software license agr eement, type the following: Y T o view the full text of the license agreement, press [F1]. (Once you hav [...]

A-4 A PPENDIX A: S OFTWARE O PTION S ETTINGS 7 Select Configuration and Diagnostic Pr ogram from the next screen. 8 Do one of the following: ■ If you have a single adapt er installed, the menu selec tion Configure A dapter appears already highlighted. Press [Enter]. ■ If you have multiple adapt ers installed, use the arrow keys to select an a[...]

Changing Software Option Settings A-5 Figure A-3 Configuration Dialog Box 11 Press [Ent er]. A second dialog box appears. 12 Use the arrow key s to scroll through the list of settings f or that option. Selec t a setting and pr ess [Enter]. 13 Continue this proc edure for any of the other parameters you want to change . Refer to the on-line help (u[...]

A-6 A PPENDIX A: S OFTWARE O PTION S ETTINGS Saving Software Option Settings If you want to use the same settings on other adapters , you can save the configuration settings to a file . Select <Save> under <F ile Options> in the Adapter C onfiguration dialog box. For example , type: D:CONFIG3C59X.SET where x repr esents the last di[...]

B S PECIFICATIONS This appendix lists the specifications, connector pin assignments, and cable requirements for the 3C590 PCI adapters. Adapt er Specifications Network Interface 3C590-TPO Ethernet IEEE 802.3i 10BASE-T industr y standard f or a 10 Mbps baseband CSMA/CD local area network 3C590-C OMBO IEEE 802.3i 10BASE-T and Ethernet IEEE 802.3 in[...]

B-2 A PPENDIX B: S PECIFICATIONS RJ-45 C onnec tor Pin Assignments F igure B-1 shows the RJ-45 connector pin assignments. Figure B-1 RJ-45 Connector Pin Assignments A UI C onnector Pin Assignments T able B-1 lists the pin assignments for the AUI (attachment unit inter face) connector . RD+ RD– 1 2 3 4 5 12345678 TD+ TD– 6 7 8 T able B-1 A UI Co[...]

Cable Requirements B-3 Cable Requir ements In order to maintain compliance with the limits of a Class B digital device, 3Com requires that you use quality interface cables when connecting to this device. Changes or modifications not expressly approv ed by 3Com could v oid the user ’ s authorit y to operat e this equipment. Examples of suppor ted[...]

C 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 da ys a week, 24 hours a day , through the follo wing on-line systems: ■ 3Com Bulletin Board Service (3ComBBS) ■ W orld Wide Web [...]

C-2 A PPENDIX C: T ECHNICAL S UPPORT W orld Wide W eb Site Access the latest netw orking information on 3Com ’ s World Wide Web site b y entering our URL into your Int ernet browser: http://www.3Com.com/ This service features news and information about 3Com products, customer service and suppor t, 3Com ’ s latest news releases, selec ted articl[...]

On-line Technical Services C-3 ■ CardFacts provides adapter installation diagrams , configuration drawings, troubleshooting instruction, and technical articles. Document 9999 provides you with an index of adapter documents. ■ NetF ac ts pro vides data sheets and technical articles on 3Com C orporation ’ s hub , bridge, router , terminal ser [...]

C-4 A PPENDIX C: T ECHNICAL S UPPORT Suppor t from Y our Network Supplier If additional assistance is required , contact your network supplier . Many suppliers are authorized 3C om ser vice par tners who are qualified t o provide a v ariety of ser vices , including network planning, installation, hardware maintenance , application training, and su[...]

Returning Products for Repair C-5 Returning Pr oducts for Repair A product sent directly to 3Com for repair must first be assigned a Return Materials Authorization (RMA) number . A product sent to 3Com without an RMA number will be returned to the sender unopened , at the sender ’ s expense. T o obtain an RMA number , call or fax: Country Teleph[...]

G LOSSARY 10BASE2 The IEEE standard f or a 10 megabit per second baseband network on thin coaxial cable. 10BASE5 The IEEE standard f or a 10 megabit per second baseband network on thick coaxial cable. 10BASE-T The IEEE standard f or a 10 megabit per second baseband network on twisted-pair cable . Agent A software routine that performs an action whe[...]

2 G LOSSARY Auto Selec t Media T ype A utility that detects the t ype of netw ork cable connected to the adapter and automatically selects that connection for packet transmission. This func tion is implemented by all NetW are ODI drivers, Windows for Workgroups driv ers, NDIS 2.01 drivers, and Windows NT driv ers. Backbone The main transmission med[...]

G LOSSARY 3 DMI Desktop Management Inter face . T he management scheme, developed by the Desktop Management T ask Force (DMTF), to make management of a PC easier through standardized means of access to information fr om managed devices. The standard supported by the DMI defines how information on PCs is made available and accessible . Driver A pro[...]

4 G LOSSARY ISA Industr y Standard Archit ecture. A 16-bit ex tension of the original IBM  PC bus architecture. The IBM P ersonal Computer A T  bus. Loopback A type of diagnostic test in which the transmitted signal is returned to the sending device after passing through all, or a por tion of , a data communications link or network. A loopbac[...]

G LOSSARY 5 Par allel T ask ing Third-generation Ethernet adapt er architecture. Parallel T ask ing technology accelerates data transfer by pr ocessing data packets simultaneously instead of sequentially . For example, when transmission is the task, the P arallel T asking architecture begins to write data t o the network even bef ore an entire fram[...]

6 G LOSSARY T ransceiv er A hardware device that links a node to a netw ork cable and functions as both a transmitter and a receiver . T wisted-pair Wiring similar to that found in the telephone system, consisting of two insulated wires loosely twisted ar ound each other to help cancel out induced noise in balanced circuits.[...]

I NDEX Numerics 10 Mbps Ethernet network adapter 1-1 10BASE2 coaxial cable 1-1 10BASE5 coaxial cable 1-1 10BASE-T twisted-pair cable 1-1 3C590 PCI 10 Mbps adapters 1-1 3C590-TPO and 3C590-COMBO adapters 1-1 , 1-2 backplates 1-2 connectors for 2-3 network interface B-1 3C59X.COM driv er 3-3 3C59X.LAN ser ver driv er 3-8 , 3-9 3Com Bulletin Board Ser[...]

2 I NDEX D default option settings A-1 , A-2 Desktop Management Inter face (DMI) 1-3 , 3-13 diagnostic program, star ting 4-2 diagnostic tests 4-1 changing parameters 4-9 failed 4-7 Group 1 4-1 , 4-3 Group 2 4-2 , 4-4 Group 3 4-2 , 4-5 help 4-7 purpose 4-1 starting 4-2 DOS 3-2 , 3-5 , A-2 DOS ODI client 1-3 , 3-1 , 3-4 , 3-6 driver agents 3-12 driv[...]

I NDEX 3 N NDIS drivers 3-12 NET .CFG file 3-8 , 3-13 NetF acts C-3 NetW are 4.x ser ver driv ers 3-8 , 3-10 DOS ODI client 3-1 , 3-4 environment 3-2 with multiple adapters 3-8 , 3-10 NetW are Loadable Modules (NLMs) 3-8 , 3-10 network cables, connecting fiber-optic 2-5 thick coaxial 2-5 , B-3 thin coaxial 2-5 , B-3 twisted-pair 2-4 , B-3 Network[...]

4 I NDEX U UNIX driver 3-12 unshielded twisted-pair connections B-3 W Windows for Wo rkgroups 3-12 Windows NT 3-12 W orkGroup Manager for Windows 3-13 Z Zoom 4-7[...]

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: If a product does not operate as warranted during the applicable warranty period, 3Com shall, at its op[...]

W ARRANTIES EXCL USIVE: IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY SHALL BE REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT 3COM’S OPTION. THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUT[...]

FCC CLASS B C ER TIFICATION 3Com Corporation Model Nos: 3C590-TPO and 3C590-COMBO FCC ID: DF63C590 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 [...]