TYAN THUNDERBOLT Manual page 98

Appendix 2
Adaptec Ultra2 LVD SCSI
STEP 2: Plug the long end of the cable to the 68-pin motherboard connec-
tor if the cable is 68-pin or plug the long end of the cable to the 50-pin
motherboard connector if the cable is 50-pin.
STEP 3: Plug the other end of the cable to a terminated Fast/Wide Ultra
SCSI peripheral (if 68-pin) or a terminated Fast/Ultra Narrow SCSI peripheral
(if 50-pin).
STEP 4: To connect a second peripheral, plug the middle connector of the
cable to the peripheral. The peripheral must not be terminated.
Connecting the External Cable for SCSI Devices
Use a 68-pin external Ultra2 SCSI connector to connect your external Ultra2
peripherals. Each Ultra2 SCSI peripheral connects to the next in a daisy chain.
Therefore each external peripheral will require an external cable.
As an option, Tyan provides an external Ultra2 SCSI connector that can be
inserted in an expansion slot. The cable end of the external SCSI connector
can either be plugged into the Ultra2 SCSI motherboard connector, or it can be
connected to the end of a 68-pin Ultra SCSI cable (be sure to take off the cable
terminator first).
NOTE: You have the option to connect either Ultra2 SCSI or Ultra SCSI
! ! ! ! !
(and earlier) devices externally. However, mixing both Ultra2 SCSI and non-
Ultra2 SCSI on the same channel will cause all devices on that channel to
important!
operate in Ultra SCSI (single-ended) mode with the limits of the cable and
speeds of that interface.
STEP 1: Connect one end of an external SCSI cable to the external Ultra2
connector at the back of the computer.
68-pin External Ultra2
SCSI Connector
High-density 68-pin
External Ultra2 SCSI Cable
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