Adaptec AHA-2940UW/OF User Manual page 31

Support for UltraSCSI Speed— This option determines
whether the single-chip host adapter negotiates for double-
speed synchronous transfer rates in support of UltraSCSI
devices on the selected SCSI bus. The setting of this option
affects the values displayed for the Maximum Sync Transfer
Rate option available for each SCSI device on the SCSI bus.
Host Adapter SCSI Termination— This option enables you to
configure the SCSI cable termination on the single-chip host
adapter. The default setting for single-chip host adapters that
support cable-sensing termination is Automatic.
Host Adapter SCSI Termination is determined by which SCSI
connectors on the single-chip host adapter have devices
attached to them. The Manual termination settings are listed in
the table below:
Single-Chip Host Adapter
Termination
LOW HIGH
ON
ON
ON
OFF
OFF
OFF
INVALID
1
You cannot connect devices to all three connectors at the same time.
Devices Attached To...
ON 68-pin internal connector only
ON 68-pin external connector only
ON 50-pin internal connector only
OFF 68-pin internal and 68-pin external
connectors
ON 50-pin and 68-pin internal
connectors
ON 50-pin internal and 68-pin external
connectors
50-pin and 68-pin internal
connectors and 68-pin external
connector
Using SCSISelect
1
3-7