Dell Precision 410 User Manual page 148

Dell Precision 410 Mini Tower Systems User's Guide
10-18
Dell have active termination at the end of the cables, any SCSI devices you install
should have termination disabled on the devices.
Furthermore, when attaching external SCSI devices, you should use only external
SCSI cables with active termination on the cable. When used with this type of cable,
all external SCSI devices also need to have termination disabled on the devices.
See the documentation provided with any optional SCSI device you purchase for infor-
mation on disabling termination on the device.
The 68-pin (internal) SCSI cable in your Precision 410 system connects SCSI devices
(normally SCSI hard-disk drives) to the 7890 Ultra2/Wide LVD controller.
The connector at the end of the cable attaches to the Ultra2/Wide LVD primary
SCSI controller connector labeled "SCSI_ULTRA2" on the system board.
The other connectors on the cable are used for attaching up to four SCSI hard-
disk drives in the internal drive bays (see Figure 10-14).
The 50-pin (internal) Narrow SCSI cable connects SCSI devices to the 7880 Ultra/Wide
controller.
The narrow connector at the end of the cable attaches to the secondary SCSI
controller connector labeled "SCSI_NARROW" on the system board.
The other connectors on the cable are used for attaching SCSI devices installed in
the externally accessible drive bays (see Figure 10-14).
An optional shielded external cable with a 68-pin connector is used for attaching an
external SCSI device to the 7880 external SCSI connector on the system back panel.
Refer to the documentation that came with the external SCSI device for information
on how to connect the device, set its SCSI ID, and disable termination.
68-pin SCSI cable
(to hard-disk drive)
)LJXUH  ,QWHUQDO 6&6, &DEOH
50-pin SCSI cable
(to device[s] in externally
accessible drive bay)