Microtech USB XpressSCSI User Manual page 12

USER'S
USER'S
MANUAL
MANUAL
Connecting and Using more than one SCSI Device:
The SCSI standard supports connection to one computer and up to seven SCSI devices. You can
use the USB XpressSCSI (Part# USB-SCSI-DB25 or USB-SCSI-HD50) to connect either one SCSI
device, or several SCSI devices in a series. When more than one SCSI device is connected to
your computer it is referred to as a SCSI chain.
Please note, the SCSI connector on your USB XpressSCSI model may or may not be the
appropriate SCSI connector to use in your system configuration (depending on the SCSI connec-
tion required for your hardware setup and the USB XpressSCSI model you purchased). You may
need to obtain an adapter to properly connect the USB XpressSCSI to your SCSI device(s). You
may also need to acquire additional SCSI cables if you would like to attach additional SCSI
devices. Some of your existing SCSI devices may have already included SCSI cables which may
be appropriate to use. For more information contact the manufacturer of your SCSI device(s),
your local computer dealer, or Microtech's Technical Support Department.
IMPORTANT: Always use a high-impedance (100-ohm) type SCSI cable. Be careful not
to use printer cables, as they may look like SCSI cables, but will cause malfunctions and
possible loss of data.
1.
Follow the steps in the previous section "Connecting a SCSI device" to connect the USB
XpressSCSI to the first SCSI device.
2.
Most SCSI devices include a second SCSI port/connector to attach additional SCSI
devices or an external SCSI terminator. Using an additional SCSI cable connect the next
SCSI device you would like to add to the available SCSI connector on the first device.
Refer to the illustrations on the next page.
3.
Using another SCSI cable connect the next SCSI device you would like to
add to the available SCSI connector on the second SCSI device. Repeat this step when
adding additional devices. Refer to the illustrations on the next page.
4.
Securely plug each cable end into each connector and then fasten with the built-in clamps
or screws.
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