H3C S6520X-30QC-EI Manual page 11

Figure2-5 Front mounting bracket
1
3
(1) Screw hole for attaching the bracket to the switch
(3) M4 screw
Figure2-6 Rear mounting bracket and shoulder screw
1 2
(1) Screw hole for attaching the bracket to the rack
Figure2-7 1U extension rail kit
(1) Extension bracket
2
2-5
(2) Screw hole for attaching the bracket to the rack
(2) Shoulder screw
(2) Extension rail