HP A3312A - Manual (Page 17)

Installation & Configuration
Installing Additional Modules
11
Installation
Figure 5. Storage Module Slots
F1, F2: Fan module slots (numbers not embossed on storage system).
A3, A4, B3, B4: Upper 1-inch module slots. Disk modules use delayed spin-up in order of SCSI ID. 1-inch
disk modules use SCSI ID switches A3, A4, B3, B4.
A1, A2, B1, B2: Lower 1-inch module slots. Valid boot device slots. Disk modules spin-up simultaneously.
1-inch disk modules use SCSI ID switches A1, A2, B1, B2.
P1, P2: Power module slots (numbers not embossed on storage system).
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