HP 98568A Installation Instruction page 242

HP 7907 A Disk Drive
Address 2
Figure 6-2.
Address 2
• If there are two other disk or tape drives (besides this HP 7907 A)
already connected to the interface, set the "HP-IB ADDRESS"
switches to 3 as shown in Figure 6-3, unless address 3 has been used
elsewhere. Refer to the manual that came with your disk drive if you
need additional switch settings.
6-16 Adding Mass Storage Devices
Address 3
Figure 6-3.
Address 3