Acer Altos 330 Series User Manual page 92

Initiate Sync Negotiation
This option determines whether the SCSI controller initiates synchronous
negotiation with the SCSI device.
When set to Yes, the SCSI controller initiates synchronous negotiation with the
SCSI device. When set to No, the SCSI controller does not initiate synchronous
negotiation. The SCSI controller, however, always responds to synchronous
negotiation if the SCSI device initiates it. The default setting is Yes.
Data is transferred in asynchronous mode if neither the SCSI controller nor the
SCSI peripheral negotiates for synchronous data transfers.
Maximum Sync Transfer Rate
This option determines the maximum synchronous data transfer rate that the
SCSI controller can support.
UltraWide SCSI maximum of 40.0 MBytes/sec. The default value is 40.0.
In most cases, you can use the maximum value of 40.0. If the SCSI controller is
set not to negotiate for synchronous data transfer (i.e., Initiate Sync Negotiation is
set to No), then the value selected here is the maximum rate that the SCSI
controller accepts from the device during negotiation. (This is standard SCSI
protocol.)
Some older SCSI devices do not support
synchronous negotiation. This may cause your
computer to operate erratically or hang if Initiate
Sync Negotiation is enabled. Set Initiate Sync
Negotiation to No for these devices.
The SCSI controller supports rates up to the
Chapter 3 - System Utilities 3-13