Asus PU-DL, PU-DLS SCSI Connection Notes, ASUS PU-DLS/PU-DLmotherboard user guide, 5.Two 68-pinUltra320 SCSI Connectors (U54, U69)

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.

PU-DLS	u69
	68-Pin Ultra320 SCSI Connector	1	35

u54

68-Pin Ultra320 SCSI Connector

34 1

68 35

34 68

PU-DLS Onboard SCSI Connectors

The onboard SCSI connectors are available only on PU-DLS models.

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.

68-pin Internal SCSI Cable (Twisted-Pair Ribbon)

PU-DLS				Channel B
					68-pin Female
	Internal SCSI Devices (up to 15 devices)				Terminator
		68-pin Internal SCSI Cable (Twisted-Pair Ribbon)
						Channel A
							68-pin Female
			Internal SCSI Devices (up to 15 devices)				Terminator

PU-DLS SCSI Connection Example

ASUS PU-DLS/PU-DL motherboard user guide 2-21