Adaptec USBXchange User manual

User’s Guide

USBXchange™

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User’s Guide: USBXchange •2

Introduction

This user’s guide explains how to use the USBXchange to allow SCSI

devices to plug into the Universal Serial Bus (USB) port of your PC

compatible or Apple Macintosh computer.

The SCSI controller in the USBXchange allows you to connect up to

seven SCSI devices to your desktop, portable PC, or Macintosh computer.

These devices include fixed and removable drives, CD-R/W drives, DVD

drives, hard disk drives, magneto-optical (MO) drives, and most scanners.

The USBXchange provides transfer rates of up to 1.5 MBps or a

maximum sustained rate of 700 KBps.

Overview

The USBXchange is designed as an integrated adapter with a 50-pin high-

density (SCSI-2) connector. For installation, you simply connect the male

HD50 SCSI end of the USBXchange to the female HD50 SCSI connector

on your SCSI device. See Installing the USBXchange on PC Compatibles

on page 5, or Installing the USBXchange on a Macintosh on page 15 for

more information.

USBXchange

HD50 SCSI-2 Connector

The USBXchange is designed to act as a self-powered device and receives

its power from either the termination power line of attached SCSI devices

or, if not present, from the USB bus. In some cases, especially when using

unpowered USB hubs with attached SCSI devices which do not supply

SCSI termination power, the USB bus cannot supply the needed power for

the USBXchange to operate. In these cases, you may need an external DC

power source. See USBXchange Power Supply on page 13 (PC) and

USBXchange Power Supply on page 20 (Mac) for more information.

HD50 SCSI connector

USB connector

User’s Guide: USBXchange •3

Note: Adaptec strongly recommends that you plug the USBXchange

directly into a USB port on your system. If you must connect

through a USB hub, use only a self-powered USB hub.

The USBXchange adapter is hot-pluggable, that is you can connect and

disconnect it from a live system. However, by industry standards, SCSI

devices are not hot-pluggable.

Contents of Kit

♦USBXchange Adapter to 50-pin High-Density SCSI Connector

♦50-25 Pin Converter

♦Installer CD-ROM with Mac and PC Drivers and Electronic User’s

Guide

♦Quick-Install Guide (printed on the CD jacket)

♦Registration Card

System Requirements

PC Compatible

♦Desktop or laptop PC compatible with a USB port

♦Windows®98, Windows 98 Second Edition, or Windows®2000

♦UL approved DC adapter (optional) for external power supply

Macintosh

♦Any Apple Macintosh with a built-in USB port

♦Mac OS v.9.0.4 or above for fixed and removable drives

♦Mac OS v.8.6 or 9.x for other SCSI peripherals

♦Apple USB software version 1.4.1 or later

♦UL approved DC adapter (optional) for external power supply

User’s Guide: USBXchange •4

To locate specific information covered in this user’s guide, refer to the

following table:

For information about… Go to…

PC Compatibles

Installing the USBXchange on PC

Compatibles page 5

Connecting a SCSI Device page 5

Connecting to the USB Port page 6

Connecting to an External USB Hub page 6

Installing the Windows 98 Driver page 7

Installing the Windows 2000 Driver page 9

Uninstalling the USBXchange Driver for

Windows 98 and Windows 2000 page 12

USBXchange Power Supply page 13

Macintosh

Installing the USBXchange on a Macintosh page 15

Installing the Driver Software page 15

Connecting a SCSI Device page 16

Connecting to the USB Port page 17

Connecting to an External USB Hub page 17

Using USBXchange Switcher page 18

Viewing SCSI Devices on Your Macintosh page 19

USBXchange Power Supply page 20

SCSI

Understanding SCSI page 22

SCSI IDs page 22

Terminating the SCSI Bus page 22

Connecting to More Than One SCSI Device page 23

Problem Solving

Troubleshooting page 25

Adaptec Customer Support page 28

User’s Guide: USBXchange •5

Installing the USBXchange on PC Compatibles

The USBXchange is easy to install and use. To avoid any problems during

the installation process, please follow the steps in order as described in

this section.

Connecting a SCSI Device

1Connect the USBXchange to your SCSI device(s).

Depending on the SCSI device connector type, you can either attach

the SCSI connector of the USBXchange directly to your SCSI

device, or you may require an additional cable or converter. To attach

additional SCSI devices, connect them using a SCSI chain. See

Connecting to More Than One SCSI Device on page 23, for more

information.

2Be sure your cable is securely attached to your SCSI device and

fastened in place with the built-in locking clamps.

3Power on the SCSI devices.

Note: Do not turn on the power until the SCSI device is attached to

the USBXchange adapter.

Attaching the USBXchange to a

SCSI device

User’s Guide: USBXchange •6

Connecting to the USB Port

1After connecting to your SCSI devices, if your computer is not

powered up, then power it up now. Connect the USB connector into

the USB port located on your computer.

2Make sure the cable ends are firmly connected. Do not force your

connections as this may damage your system or the USBXchange.

Note: The USBXchange receives its +5V power from either the

terminator power line of the attached SCSI device, or if no

termination power is available, it switches automatically to

receive the power from the USB bus.

Connecting to an External USB Hub

1Connect the external USB hub (purchased separately) to the USB

port of your computer.

Note: To ensure proper operation, Adaptec recommends using only

self-powered hubs (only hubs that receive their power from

an A/C connection). Otherwise, you will need to connect the

USBXchange to an optional power supply. See USBXchange

Power Supply on page 13 for more information.

Attach the USB connector from

the USBXchange to the USB

port on your computer

User’s Guide: USBXchange •7

2Connect the USB connector of your USBXchange to a port on the

external USB hub.

Installing the Windows 98 Driver

When you attach the USBXchange, Windows 98 will automatically detect

it. If it is your first time attaching the adapter to your system, Windows 98

will prompt you to install the driver from the CD included with your kit.

Follow the steps in this section to install the Windows 98 driver:

1If Windows 98 is not running, start it now.

2If the USBXchange is not already plugged into the USB port, plug it

in now. Make sure the USBXchange is connected to a powered-up

SCSI device.

3An Add New Hardware Wizard dialog box should appear after

connecting to your USB port. Click Next to continue.

Attach the USB connector from the

USBXchange to the USB port on your

external USB hub Attach the USB connector from the

external USB hub to the USB port

on your computer

User’s Guide: USBXchange •8

4Select Search for the best driver... and then click Next.

5Select CD-ROM drive for the Add New Hardware Wizard to search

your CD-ROM drive for drivers. Insert the USBXchange CD-ROM

in the CD-ROM drive. Click Next.

6Click Next to install the driver.

User’s Guide: USBXchange •9

7Click Finish to complete the installation.

Installing the Windows 2000 Driver

When you attach the USBXchange, Windows 2000 will automatically

detect it. If it is your first time attaching the adapter to your system,

Windows 2000 will prompt you to install the driver from the CD included

with your kit. Follow the steps in this section to install the Windows 2000

driver:

1If Windows 2000 is not running, start it now.

2If the USBXchange is not already plugged into the USB port, plug it

in now. Make sure the USBXchange is connected to a powered-up

SCSI device.

3A Found New Hardware Wizard dialog box should appear after

connecting to your USB port. Click Next to continue.

User’s Guide: USBXchange •10

4Select Search for a suitable driver... and then click Next.

5Select CD-ROM drives for the Found New Hardware Wizard to

search your CD-ROM drive for drivers. Insert the USBXchange

CD-ROM in the CD-ROM drive. Click Next.

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