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3Com 3C389 User Manual

Megahertz 16/4 token ring lan pc card
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Part No. 09-0536-003
Published August 1998
3Com Megahertz
16/4 Token Ring LAN
PC Card User Guide

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  • Page 1 3Com Megahertz 16/4 Token Ring LAN PC Card User Guide http://www.3com.com/ Part No. 09-0536-003 Published August 1998...
  • Page 2 3Com Corporation. 3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to provide notification of such revision or change.

  • Page 3: Table Of Contents

    Card and Socket Services Versus Point Enablers Autoset Mode NSTALLING THE OKEN PC C Kit Contents Installation Tips Installing the 3C389 PC Card Removing the 3C389 PC Card NSTALLING THE ETWORK RIVERS Windows 98 Installation Windows 95 Installation Windows 95 OSR 2 Installation...
  • Page 4 LIENT LANAID Net Address IBM LAN Client Installing LANAID Using LANAID to Install IBM LAN Client Using LANAID to Configure the 3C389 PC Card Running LANAID From the Command Line ROUBLESHOOTING Error Codes OS/2 NDIS Error Codes DXMCSMOD Error Codes...
  • Page 5 OS/2 NDIS Hot-Pluggability and Suspend/Resume ECHNICAL UPPORT Online Technical Services World Wide Web Site 3Com FTP Site 3Com Bulletin Board Service Access by Analog Modem Access by Digital Modem 3ComFacts Automated Fax Service Support from Your Network Supplier Support from 3Com...
  • Page 6 NDEX ORPORATION IMITED ARRANTY FCC C LASS TATEMENT FCC D ECLARATION OF ONFORMITY NDUSTRY ANADA LASS MISSION OMPLIANCE TATEMENT VIS DE ONFORMITÉ À LA ÉGLEMENTATION ’I NDUSTRIE ANADA VCCI C LASS TATEMENT OFTWARE ICENSE GREEMENT...
  • Page 7 IGURES PC Card Software Interfaces Attaching the Cable to the 3C389 PC Card Inserting the 3C389 PC Card Modular UTP Cable for the 3C389 PC Card RJ-45 to STP Connector...
  • Page 9 ABLES Notice Icons Text Conventions Clients and Protocol Descriptions DOS ODI Error Codes DXMCSMOD Error Codes, Explanation, and Action Phase Nibble Explanations 5-12 Error Condition Nibble Explanations 5-12 Actions for Open Errors 5-13 Recommended Actions Key 5-16...

  • Page 11: About This Guide

    BOUT UIDE This guide describes how to install and configure the 3Com 3C389 Token Ring LAN PC Card, and is intended for the token ring network administrator, operator, or hardware installer. A knowledge of token ring networks and microcomputer hardware configuration procedures is required.

  • Page 12: Conventions

    BOUT UIDE Conventions Table 1 and Table 2 list conventions that are used throughout this guide. Table 1 Notice Icons Icon Notice Type Alerts you to... Information note Important features or instructions Caution Risk of personal safety, system damage, or loss of data Warning Risk of severe personal injury...

  • Page 13: Introduction

    The 3Com Token Ring LAN PC Card (formally know as the TokenLink Velocity PC Card and referred to as the 3C389 PC Card) is a network interface card (NIC) that provides an interface between PCs and token ring networks. The 3C389 PC Card is designed to operate in...

  • Page 14: Overview Of Point Enablers, Socket Services, Card Services, And Super Client Drivers

    Auto Ring Speed option that automatically detects the data rate of the ring. See the README.TXT files on the TokenDisk diskettes for information on 3C389 PC Card features not documented in the user guide. Overview of Point Enablers, Socket Services,...
  • Page 15 Overview of Point Enablers, Socket Services, Card Services, and Super Client Drivers PCMCIA 2.1 Point enabled LAN device LAN device driver driver Card Point enabler services Socket Socket services controller Socket controller Socket services Card services enabled enabled LAN device LAN device driver driver...

  • Page 16: Point Enablers

    PC Card controller; therefore, they must be written to support a particular type of controller. For the 3C389 PC Card, there are point enablers for the Intel chip (most PCs) and for the chip installed in the Toshiba 3300SL.

  • Page 17: Socket Services

    Socket Services Socket Services This is a BIOS-type interface that provides a way to gain access to the PC Card sockets (slots) of a PC. It identifies how many sockets your PC has and detects the insertion or removal of a PC Card while the PC is switched on. It has an interface to Card Services.
  • Page 18 1: I HAPTER NTRODUCTION If the installation program detects Card and Socket Services in your PC, it will default to Autoset mode. Autoset mode allows your LAN driver to negotiate with Card Services for memory space and interrupts. This helps to prevent conflicts with other PC Cards that are installed in your PC;...

  • Page 19: Super Client Drivers

    Card Services, CS20TOK.EXE is supplied. This program is a Card Services Enabler that uses Card and Socket Services to configure the 3C389 PC Card. As with other enablers, you must specify the resources desired for the PC Card, and they must agree with the settings of the token ring device driver for the system to work correctly.

  • Page 20: Autoset Mode

    1: I HAPTER NTRODUCTION For point enablers, you have to specify the slot in which a particular PC Card will be used and you have to specify memory locations, interrupt levels, and other parameters. This is not difficult unless you use several PC Cards at different times, in which case you need to make certain that what you specify does not conflict with any other PC Cards installed in your PC.

  • Page 21: Installing The Token Ring Lan

    Six TokenDisk diskettes An shielded twisted pair (STP) connector for connection to STP network wiring The 3C389 PC Card cable can be purchased separately. If you want additional cables, contact your 3Com marketing representative or your place of purchase. Installation Tips If you plan to use Card and Socket Services software, Version 2.0 or higher, install it and reboot your PC.
  • Page 22 Suspend/Resume” for more information 1 Turn off the power to the PC. 2 Attach the cable to the 3C389 PC Card (Figure 2-1). Retract the latch by sliding the half-circle latching button on the connector backwards toward the cable. The cable cannot be connected or disconnected unless the latch is retracted.
  • Page 23 If you are using a point enabler, note which slot you use. The 3C389 PC Card can go in only one way. If you feel resistance before the 3C389 PC Card is fully inserted, remove the 3C389 PC Card, turn it over, and reinsert it.
  • Page 24 5 Connect the PC Card cable to the network port. If your network uses unshielded twisted pair (UTP) cabling, attach the RJ-45 (8-pin modular) connector on the 3C389 PC Card cable (P/N 38H7044) to the RJ-45 network port (Figure 2-3). To RJ-45...

  • Page 25: Removing The 3C389 Pc Card

    Follow these steps to remove the 3C389 PC Card: 1 Switch off the power to the PC. 2 With the cable still attached to the 3C389 PC Card, remove the 3C389 PC Card from the PC. 3 To detach the cable from the 3C389 PC Card, retract...

  • Page 27: Installing The Network Drivers

    NSTALLING THE ETWORK RIVERS This chapter describes how to install network LAN drivers other than IBM LAN Client. After installation, some network drivers must be configured using LANAID, an installation and diagnostic utility described in Chapter 5. If you are installing the IBM LAN Client go directly to Chapter 5.
  • Page 28 OS/2 NetWare Client OS/2 NDIS 2 Device Driver Using Other Installation Programs The most recent 3Com drivers are available from the 3Com World Wide Web site (www.3com.com) or the 3Com Bulletin Board Service. See Appendix D for information on how to connect with 3C...

  • Page 29: Windows 98 Installation

    Windows 98 Installation Windows 98 Installation You will need your Windows 98 CD during installation, unless you have copied the .CAB files to your hard disk. TokenDisk diskette #6 contains the device driver for Windows 98. 1 Insert the PC Card and connect the cable to the card as described in Chapter 2.
  • Page 30 2 If you have not already inserted the 3C389 PC Card, insert it now with the cable attached. The PC does not detect the 3C389 PC Card if the cable is detached. If PCMCIA support has been started on your machine, the system will prompt you for a diskette.

  • Page 31: Windows 95 Osr 2 Installation

    1 If you have not already inserted the 3C389 PC Card, insert it now with cable attached. The PC does not detect the 3C389 PC Card if the cable is detached. If PCMCIA support has been started on your machine, the system will prompt you for a diskette.

  • Page 32: Windows For Workgroups/Ndis 2 Installation

    ETWORK RIVERS Windows for Workgroups/NDIS 2 Installation If you are installing the 3C389 PC Card in a PC that already has Windows for Workgroups installed, refer to the Microsoft Windows for Workgroups User's Guide for instructions on how to install and configure a third-party device driver.

  • Page 33: Using Memory Management

    Card and Socket Services for available resources. LANAID will allow you to select values for resources to be used by your 3C389 PC Card such as Interrupt, memory, and I/O Base Address. If you are not using Card and Socket Services in...
  • Page 34 The Select OEM Option dialog box appears. 8 Select 3C389 TokenLink Velocity PC Card and click OK. The 3C389 PC Card driver and its associated files will be copied from the diskette to the hard drive. 9 In the 3Com TokenLink Velocity PC Card dialog box, click Configure.

  • Page 35: Windows Nt 4.0 Installation

    The Select OEM Option dialog box appears. 8 Select 3C389 TokenLink Velocity PC Card and click OK. The 3C389 PC Card driver and its associated files will be copied from the diskette to the system. 9 In the 3Com TokenLink Velocity PC Card dialog box, click Configure.

  • Page 36: Novell Netware Client 32 For Windows 95 Installation

    3-10 3: I HAPTER NSTALLING THE ETWORK RIVERS Novell NetWare Client 32 for Windows 95 Installation 1 Click Remove PC Cards from the Network Control Panel for any PC Cards that are no longer in the system or that you are removing. 2 In a DOS window, change to the \windows\inf subdirectory.
  • Page 37 The Configuration Workstation panel appears. 8 From the Network Adapters group box, select 3Com TokenLink Velocity PC Card, then click Add. You can edit parameter settings for this NIC. Select this NIC in the Current Configuration box and select Edit.

  • Page 38: Dos Client 16 For Novell Netware 4.01 And Above Installation

    [Enter] 5 Select Other drivers. 6 Choose 3Com TokenLink Velocity PC Card. 7 At the Settings for 3Com TokenLink Velocity PC Card window, press [Esc]. 8 At step 5, press [Enter] to finish installing NetWare. 9 Press Enter to exit the installation tool.

  • Page 39: Using Memory Management

    Card and Socket Services for available resources. LANAID will allow you to select values for resources to be used by your 3C389 PC Card such as Interrupt, memory, and I/O Base Address. If you are not using Card and Socket Services in...
  • Page 40 8 In the Configuration panel, in the Network Adapters group box, select 3Com TokenLink Velocity PC Card and click ADD. You can edit parameter settings for the 3C389 PC Card. Highlight this NIC in the Current Configuration list box and click Edit. When you have finished with the parameter settings, click OK.

  • Page 41: Ibm Lan Support Program/Native Installation

    LAN support driver DXMCSMOD.EXE. It does not support the NDIS environment and should not be used for the installation of NDIS drivers. Perform the following installation steps for the 3C389 PC Card when using DOS and LSP Native: 1 Insert TokenDisk diskette #2 into the floppy drive...
  • Page 42 LSP.INI file and add: netaddress=yyyyyyyyyyyy where yyyyyyyyyyyy is the 12-digit hexadecimal address. 3 Configure the 3C389 PC Card using the LANAID program (See Chapter 4). 4 If LANAID is not already installed, go to the section “Installing LANAID” in Chapter 4.

  • Page 43: Using Memory Management

    Card and Socket Services for available resources. LANAID will allow you to select values for resources to be used by your 3C389 PC Card such as Interrupt, memory, and I/O Base Address. If you are not using Card and Socket Services in...

  • Page 45: Lanaid And Ibm Lan Client

    You will need the manuals that were shipped with your network operating system. LANAID LANAID is a software tool shipped on the 3C389 PC Card TokenDisk diskettes. Use LANAID to configure the 3C389 PC Card to work with any of the following network device...

  • Page 46: Net Address

    The universally administered address (also known as the net address or MAC address) of the 3C389 PC Card is shown on the back of the card. Ensure that the address shown by LANAID is the same as the address on the 3C389 PC Card.

  • Page 47: Installing Lanaid

    Installing LANAID IBM LAN Client provides support using one PC Card specific LAN device driver instead of two different kinds of drivers for your clients and servers. You select the appropriate device drivers and protocol stacks for your PC. The correct modules are automatically loaded based on the options you select.

  • Page 48: Using Lanaid To Install Ibm Lan Client

    If you chose Express Install go to step 9. When you choose Express Install, NetWare Client-32 and frame type 802.2 are loaded as well as IBM LAN Client using the default protocols provided for your 3C389 PC Card type and operating system.

  • Page 49: Clients And Protocol Descriptions

    Installing LANAID 7 Select one or more of the clients and protocols and click Continue. The IBM LAN Client Configuration window appears. Table 4-1 Clients and Protocol Descriptions Client or Protocol Description NETWARE CLIENT 32 NetWare Client 32 is Novell’s version of client (IPX/SPX) software.
  • Page 50 4: LANAID IBM LAN C HAPTER LIENT 9 Click Install. You will be prompted to insert diskettes. The options that you have selected will be installed automatically. The Installation Log and IBM LAN Client Installation Complete windows appear. 10 Click OK and click Close. The View Adapter Configuration window appears.

  • Page 51: Using Lanaid To Configure The 3C389 Pc Card

    Using LANAID to Configure the 3C389 PC Card This section explains how to run LANAID to configure the 3C389 PC Card for operation with a device driver. See Chapter 3, “Installing the Network Drivers,” for information on installing device drivers.

  • Page 52: Running Lanaid From The Command Line

    4: LANAID IBM LAN C HAPTER LIENT 5 Click Change to select from the allowable values yourself. 6 Click Store. You are prompted to insert diskettes at the correct time, and the values that you have chosen are configured automatically. 7 Click Done.

  • Page 53: Troubleshooting

    EMM386.EXE in your CONFIG.SYS, reboot, and try the 3C389 PC Card again. If the 3C389 PC Card functions, you will have to edit the EMM386.EXE command to exclude some memory. The 3C389 PC Card uses 8 KB of memory in two separate areas.
  • Page 54 Typically, the LAN driver will not initialize. Look at the default values for the interrupt, whether the 3C389 PC Card is a primary or secondary 3C389 PC Card (this affects the I/O ports), and where the MMIO memory and the SRAM memory are located.

  • Page 55: Error Codes

    Error Codes If you believe that you have a hardware problem with the 3C389 PC Card, run the 3C389 PC Card diagnostics. See “Running the Diagnostics Program” later in this chapter. Check “Error Codes” if your PC displays an error code.

  • Page 56: Dos Odi Error Codes

    PC Card cannot be found or the cable is not attached. 3C389 PC Card has not been inserted in the PCMCIA socket. Insert your 3C389 PC Card in the socket and try again. TOKENCS-DOS-204 The shared RAM is on incorrect boundary.
  • Page 57 Please insert a 3C389 PC Card or press [ESC] to avoid loading the driver. This message occurs when you have not inserted a 3C389 PC Card in the machine and have started TOKENCS.COM. Insert a 3C389 PC Card at this time or press [ESC] to leave.

  • Page 58: Dxmcsmod Error Codes

    Explanation and Action DXMCS 18I The 3C389 PC Card is ready to attach to the ring. It is configured for the displayed ring speed in Mbps. Enter Y if this is correct. If you would like to change the configured ring speed, enter C to change.

  • Page 59: Troubleshooting Windows 95 (Ndis 3)

    6 If you see a conflict indicator, double click the 3C389 PC Card networks adapters icon. The properties dialog for the 3C389 PC Card appears.

  • Page 60: Troubleshooting Windows Nt (Ndis 3)

    Running the Diagnostics Program Use the diagnostics program on TokenDisk diskette #1 to test the hardware components of the 3C389 PC Card. The diagnostics program performs a series of tests and displays the results of each one by showing success or failure.

  • Page 61: Test Options

    1 Boot the PC with TokenDisk diskette #1. TokenDisk diskette #1 is a PC DOS system diskette. 2 At the DOS Menu, select 2, 3Com TokenLink Velocity PC Card Extended Diagnostics. 3 Follow the instructions as they appear.

  • Page 62: Diagnostics Error Codes And Suggested Actions

    PC Card. Reboot your PC using the diagnostic diskette (TokenDisk diskette #1 is a bootable diskette), and run the diagnostic program again. If the 3C389 PC Card continues to fail, replace the card and cable. One of the following codes will be shown to indicate the results of the initialization test.

  • Page 63: Open Errors

    Running the Diagnostics Program 5-11 Open Errors Failure during the adapter open test might indicate that the PC Card is not properly configured to run on the network it is trying to open onto or that the PC Card is not properly configured for the system.

  • Page 64: Phases

    5-12 5: T HAPTER ROUBLESHOOTING Phases Table 5-3 Phase Nibble Explanations Value Meaning Lobe media test Physical insertion Address verification Roll call poll (neighbor notification) Request parameters Errors Table 5-4 Error Condition Nibble Explanations Value Meaning Function failure Signal loss Reserved Frequency error (see note) Time-out...
  • Page 65 Running the Diagnostics Program 5-13 Table 5-5 Actions for Open Errors Error Code Explanation Action Lobe Media, Function Failure: The testing of the lobe 1, 3, and between the PC Card and the access unit has been unsuccessful because the lobe has a bit-error rate that is too high, or the PC Card cannot receive successfully.
  • Page 66 5-14 5: T HAPTER ROUBLESHOOTING Table 5-5 Actions for Open Errors (continued) Error Code Explanation Action Address Verification, Ring Failure: The PC Card, 1 and 2a acting as an active monitor, was unable to complete the ring purge function successfully. This indicates that an error condition has occurred since the successful completion of monitor contention (claim token), when this PC Card became the active...
  • Page 67 Running the Diagnostics Program 5-15 Table 5-5 Actions for Open Errors (continued) Error Code Explanation Action Ring Poll, Ring Beaconing: The PC Card has either 1 and 2b detected a monitor contention (claim token) failure or received a beacon MAC frame from the ring. Ring Poll, Remove Received: The PC Card has 2a and 4 received a remove ring station MAC frame,...

  • Page 68: Transmit Error Codes

    5-16 5: T HAPTER ROUBLESHOOTING Table 5-6 Recommended Actions Key Number Description After delaying at least 30 seconds, retry the open two times, inserting the same delay between each try. After delaying at least 30 seconds, check the PC Card configuration (especially the PC Card data rate) and retry the open.
  • Page 69 Running the Diagnostics Program 5-17 Unrecognized command code Unauthorized access priority Error on frame transmission, examine STRIPPED_FS Error on frame transmit or strip process Unauthorized MAC frame Maximum commands exceeded Correlator not acceptable Link not transmitting I frames, status changed from link open Transmit frame length not acceptable Link retransmission in process, buffers free...

  • Page 71: A Using A Memory Manager

    PC so that the memory manager does not use the same memory as your 3C389 PC Card. If you have more than one 3C389 PC Card, you must reserve the memory needed for all of them.

  • Page 72: Memory Managers With Card And Socket Services

    Memory Managers with Card and Socket Services To prevent duplicate use of a memory location, the memory range used by your 3C389 PC Card must be excluded from the memory manager. To do this, you must edit your CONFIG.SYS file. In certain environments, the installation program will add the exclude statement automatically.
  • Page 73 For example, with IBM Card Services the /MA option is used to tell Card Services what memory range it can use for 3C389 PC Cards. It also uses some of this area for itself. That same /MA range must be excluded from the memory manager line.

  • Page 74: Expanded Memory Specification

    DEVICE=C:\PCMPLUS\PCMCS.EXE /WAIT=12 /ADDR=D0 /IRQ=9 IBM Card Services The memory range used by 3C389 PC Cards must fall within the range specified by /MA. The memory range used by Card Services itself (4 KB) must be included in the /MA range.
  • Page 75 FRAME= parameter sets the base address of the EMS page frame (the page frame uses C0000-CFFFF). So, no 3C389 PC Cards should be set to use memory in the range C0000-CFFFF. Using IBM Card Services, you can set the /MA option such that a 64 KB block is free for the EMS page frame.

  • Page 77: Ystem Oft Ard And Ocket Ervices Specifics

    ERVICES PECIFICS Complete the following procedure to install the 3C389 PC Card on Compaq PCs using SystemSoft Card and Socket Services with DOS or Windows 3.1: 1 After installing and configuring the card using LANAID, go to the CPQDOS directory, or the directory containing SystemSoft C&SS and the file...
  • Page 79 NDIS drivers support hot-pluggability and the suspend/ resume capability. Hot-pluggability allows you to attach or detach the 3C389 PC Card cable from the PC Card while the PC is running. This has the same effect on the operating system as physically removing the PC Card from the slot;...

  • Page 80: Luggability And Suspend /Resume

    3C389 PC Card. If you plan to disconnect from your network, complete the following procedure: 1 Click the 3C389 PC Card icon on the status bar. A message box appears with a message to stop the 3C389 PC Card.

  • Page 81: Dos Odi Hot-Pluggability And Suspend/Resume

    Service Layer program (NESL.COM) for hot-plugging to work in this environment. Without this support, you should use the following procedure. Complete the following procedure to remove the 3C389 PC Card or to go into a suspend mode: 1 Unload all the drivers.

  • Page 82: Os/2 Ndis Hot-Pluggability And Suspend/Resume

    C: H PPENDIX LUGGABILITY AND USPEND ESUME OS/2 NDIS Hot-Pluggability and Suspend/Resume You can remove the card or go into suspend mode at any time as long as you are not running any applications that use shared resources. After you reinsert the card or resume, you should have all of your LAN shared resources connected.

  • Page 83: D Technical Support

    3Com FTP Site Download drivers, patches, and software across the Internet from the 3Com public FTP site. This service is available 24 hours a day, 7 days a week.

  • Page 84: 3Com Bulletin Board Service

    Up to 28,800 bps 1 408 980 8204 Access by Digital Modem ISDN users can dial in to the 3Com BBS using a digital modem for fast access up to 56 Kbps. To access the 3Com BBS using ISDN, use the following number:...

  • Page 85: 3Comfacts Automated Fax Service

    If you are unable to contact your network supplier, see the following section on how to contact 3Com. Support from 3Com If you are unable to obtain assistance from the 3Com online technical resources or from your network supplier, 3Com offers technical telephone support services. To find out more about your support options, please call the 3Com technical telephone support phone number at the location nearest you.
  • Page 86 D: T PPENDIX ECHNICAL UPPORT Below is a list of worldwide technical telephone support numbers: Country Telephone Number Asia Pacific Rim Australia 1 800 678 515 Hong Kong 800 933 486 India 61 2 9937 5085 Indonesia 001 800 61 009 Japan 0031 61 6439 Malaysia...

  • Page 87: Returning Products For Repair

    1 800 NET 3Com (1 800 638 3266) Returning Products for Repair Before you send a product directly to 3Com for repair, you must first obtain a Return Materials Authorization (RMA) number. Products sent to 3Com without RMA numbers will be returned to the sender unopened, at the sender’s expense.
  • Page 89 2-2 Installation 3-15 if using 2-1 installation Compaq PCs inserting PC Card 2-1 installing 3C389 PC Card B-1 removing PC Card 2-5 connector 2-4 tips 2-1 conventions notice icons, About This Guide 2 text, About This Guide 2...
  • Page 90 OS/2 NDIS C-4 Novell NetWare Client 32 for Windows SystemSoft Card B-1 95 installation 3-10 technical support online technical services D-1 3Com URL D-1 on-ring test 5-9 bulletin board service D-2 open error codes 5-11 fax service D-3 open errors 5-11...
  • Page 91 ARRANTY ARDWARE 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: Network NICs...
  • Page 92 Tested to comply with the FCC Standards for home and office use. NOTE: 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 approved by 3Com could void the user’s authority to operate this equipment.
  • Page 93 IMPORTANT: Read Before Using This Product YOU SHOULD CAREFULLY READ THE FOLLOWING TERMS AND CONDITIONS BEFORE USING THIS PRODUCT. IT CONTAINS SOFTWARE, THE USE OF WHICH IS LICENSED BY 3COM CORPORATION ("3COM") TO ITS CUSTOMERS FOR THEIR USE ONLY AS SET FORTH BELOW.
  • Page 94 TRADE SECRETS; TITLE: You acknowledge and agree that the structure, sequence and organization of the Software are the valuable trade secrets of 3Com and its suppliers. You agree to hold such trade secrets in confidence. You further acknowledge and agree that ownership of, and title to, the Software and all subsequent copies thereof regardless of the form or media are held by 3Com and its suppliers.

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