HP StorageWorks 8/20q - Device security

HP StorageWorks 8/20q Fibre Channel Switch Installation and Reference Guide 35
6. Fasten each slotted-rail end to the rear mounting bracket using a flat washer and a 1/4-20 hex nut
(Figure 11).
Figure 11 Fastening the rail to the rear mounting bracket
7. Optional: Fasten the filler panel to the rear mounting brackets with two M6 machine screws
(Figure 12).
Figure 12 Installing the filler panel