HP 3PAR StoreServ 7450 Storage Installation Guide

Figure 26 Rail Kit Components (PN 683811-001)
Figure 27 Rail Kit Components (PN 714501-001)
In addition to the supplied items, you may also need the following:
Screws fitting a threaded-hole rack
Screwdriver
Optional cable management arm (see Figure 28 (page 32))
Installing the Service Processor in the Storage System 31