HP JG221A Installation Manual page 23

Figure 24 Mount the switch to the rack by using front and rear mounting brackets
1
(1) Chassis rear panel
(3) Load-bearing screw
Have another person to fix the front mounting brackets to the front rack posts by using the M6 screws,
8.
making sure that the front and rear mounting brackets can fix the switch steadily into the rack. See
Figure 25.
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3
4
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(2) Rear rack post
(4) Rear mounting bracket