HP Vectra XU6 User Manual page 21

NOTE
3 Make sure the SCSI accessory is terminated correctly—either
internally or by a terminating resistor (refer to the manual provided
with the SCSI accessory).
4 Refer to the manual provided with the SCSI accessory to learn how
to install any software that may be necessary to use it.
The total length of the external SCSI cables should not exceed 3 meters
(approximately 10 feet).
Contact your dealer to order shielded HP SCSI cables to connect
external SCSI accessories.
1 Setting Up Your PC
Connecting a SCSI Accessory
Make sure the SCSI accessory
is terminated
9