HP C160 Owner's Manual page 120

Changing Your Workstation's Hardware Configuration
Checking the SCSI IDs
2 You can find out the SCSI IDs currently in use by looking under the H/W Path
NOTICE: Never use SCSI address 7 for any device. Address 7 is reserved for the
SCSI controller.
102
heading. The listing 8/16/5 scsi is the built-in SCSI bus controller. For devices
connected to the built-in SCSI bus, such as disks, the fourth number is the SCSI
ID for that device. For example, the listing 8/16/5.4.0 in the sample device list
tells you that there is a SCSI device (a disk) currently using ID 4 on the SCSI bus.