Table 3. Rear panel descriptions (continued)
Number Item Comments
2 Power supply 2 Optional on Base Module and Expansion Modules
3 Tape drive bays Full high drives take up 2 bays and can only be
installed in the lower two drive bays.
4 Upper Expansion Module connection port
5 USB port Base Module only
6 Ethernet port B Base Module only (secondary port for service
usage)
7 Ethernet port A Base Module only
8 Module alignment mechanism
9 Lower Expansion Module connection port
10 Unit Identier LED, Blue
11 Controller Error LED, Yellow
12 Controller Health Status LED, Green
13 Product Serial Number, Tag location
Magazines
Each module contains two magazines, holding up to 40 cartridges.
Figure 9. Left magazine
IBM Conîš´dential
Chapter 1. Overview7