Expanding Your System
4–7
Connecting Two Expansion Boxes
You can add a second expansion box at a later time and link the two
expansion boxes together in series. You can stack expansion boxes or
place them side by side.
To link two expansion boxes:
NOTE
If you have more than one of the same type of device attached to
your system, you must change the SCSI ID on the second device
to an open ID number on the SCSI bus. See Appendix A.
1. Make sure the
l O
on/off switches on all expansion boxes are set to
off (O), then power off the system unit.
2. Remove the 50-pin terminator on the first expansion box. Store the
terminator for future use.
3. Connect one end of the 50-pin to 50-pin connector cable to the upper
connector on the second expansion box.
4. Connect the other end of the 50-pin to 50-pin connector cable to the
lower connector on the first expansion box.
5. Attach a 50-pin terminator to the unused SCSI port on the second
expansion box.
6. Connect the power cord of the second expansion box to the power
receptacle on the expansion box, then plug the other end into a
grounded power outlet. Each expansion box needs its own source
of power.
Figure 4–3 shows how to serially connect two RRD40 expansion boxes to
the system.
