Adaptec USBXchange Manual de usuario
User’s Guide
USBXchange™
Copyright
© 2000 Adaptec Inc. All rights reserved. The user may print one copy for
personal use. Production of multiple copies or copies for sale is strictly
prohibited.
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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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