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ASUS PU-DLS/PU-DL motherboard user guide
2-21
5. Two 68-pin Ultra320 SCSI Connectors (U54, U69)
This motherboard has two 68-Pin Ultra320 SCSI connectors; one for
each of the two channels. Each channel can support a maximum of 15
devices as specified by Ultra320 standards.
SCSI Connection Notes
The PU-DLS motherboard has two 68-Pin Ultra320 SCSI connectors; one
for each of the two channels.
The onboard SCSI chipset incorporates an advanced multi-mode I/O cell
that supports both single-ended (SE), Ultra2, Ultra160, and Ultra320
devices. With Ultra320 devices, the SCSI bus platform performs at full
Ultra320 speeds (up to 320MB/s) and extended cabling 12m (or 25m in a
point-to-point configuration). When an SE device is attached, the bus
defaults to an SE speed and 1.5m cable length.
Connect SCSI devices as shown. Each channel should have only one
type of SCSI standard (e.g. Ultra320, Ultra160, Ultra2, Ultra-Wide).
Mixing SCSI devices on the same channel decreases performance of
the slower device.
PU-DLS
®
PU-DLS SCSI Connection Example
68-pin Internal SCSI Cable (Twisted-Pair Ribbon)
68-pin Female
Terminator
Internal SCSI Devices (up to 15 devices)
Channel B
68-pin Internal SCSI Cable (Twisted-Pair Ribbon)
68-pin Female
Terminator
Internal SCSI Devices (up to 15 devices)
Channel A
PU-DLS
®
PU-DLS Onboard SCSI Connectors
3568
34 1
35
6834
1
u69
68-Pin Ultra320 SCSI Connector
u54
68-Pin Ultra320 SCSI Connector
The onboard SCSI connectors are available only on PU-DLS models.