Technical data

4.2 External Hardware Options
The following sections contain information on connecting the external hardware
options to the system unit. The external hardware options for the VAX 4000
Model 100A include the following:
• DSSI expansion box
• SCSI expansion box
• Q–bus expansion box
• Printers, terminals, modems, and other devices that use asynchronous or
synchronous connectors
Your Digital Sales representative can give you information on how to order
a full range of Digital DSSI and Q–bus expansion boxes, printers, terminals,
modems, and other devices that are compatible with the VAX 4000 Model 100A
system.
4.3 Connecting a DSSI Expansion Box
To attach a DSSI expansion box, see Figure 3–8. (Figure 3–8 shows how to
attach a DSSI cable from either a DSSI VAXcluster or a DSSI expansion box.)
4.4 Connecting a SCSI Expansion Box
The following subsections contain information on:
• Guidelines for connecting expansion boxes
• Selecting available SCSI IDs on the system
• Preparing the system unit for an expansion box
• Connecting the SCSI expansion box
• Checking the expansion box connections for Q–bus, DSSI, and SCSI
4–4 Hardware Options