HP D2D Installation And Configuration Manual page 18

Figure 14 Cabling the Capacity Upgrade Kit to the HP D2D4324 Backup System
1. Power connectors
3. Power on/off button
HP D2D4312 Backup System
This product has two RAID cards and there are two connectors on each card. It does not matter
which connectors are used, but only three expansion shelves may be connected.
18 Connecting and installing the HP StoreOnce Backup System
2. P1 connector (on I/O-A)
4. Port connector on RAID card