LSI U40HVD - Manual (Page 23)

Detailed Installation Procedure 2-7
the connectors on this cable are keyed to ensure proper pin-1
connection.
All external SCSI bus connections to the LSIU40HVD are made with
shielded, 68-conductor cables (see
Figure 2.3 ). The connectors on this
cable are always keyed to ensure proper pin-1 connection.
Table 2.1 lists the SCSI bus widths and speeds as established by the
SCSI Trade Association (STA).
Important: Use only cables designed and specified for operation with
Ultra SCSI devices to make connections to the
LSIU40HVD.
Table 2.1 SCSI Bus Widths and Speeds
STA Terms
SCSI Bus
Width, Bits
SCSI Bus Speed
Maximum Data Rate,
Mbytes/s
SCSI-1 8 5
Fast SCSI 8 10
Fast Wide SCSI 16 20
Ultra SCSI 8 20
Wide Ultra SCSI 16 40
Ultra2 SCSI 8 40
Wide Ultra2 SCSI 16 80
1. Absence of the word Wide means an 8-bit bus width. It is
acceptable to use the word Narrow to avoid ambiguity.