H3C S5120-HI Series Installation Manual page 27

Figure 23 Identifying the mounting and grounding positions
(1) Rear grounding point
(3) Side grounding point
2. Wear an ESD-preventive wrist strap and make sure it makes good skin contact and is well
grounded.
3. Attach the front mounting brackets and the chassis rails to the chassis (see
a. Unpack the front mounting brackets and the M4 screws for attaching the brackets to the switch
chassis.
b. Align the round holes in the wide flange of one front mounting bracket with the screw holes in
the power-side mounting position on one side of the chassis.
c. Use M4 screws (supplied with the switch) to attach the mounting bracket to the chassis.
d. Align one chassis rail with the screw holes in the chassis rail mounting position.
e. Use M4 screws (supplied with the switch) to attach the chassis rail to the chassis.
f. Repeat the proceeding steps to attach the other mounting bracket and chassis rail to the other
side of the chassis.
Figure 24 Attaching the front mounting brackets and chassis rails to the chassis
4. Choose a grounding point.
If the side grounding point is used, go to the next step.
If the rear grounding point is used, skip the next step.
5. Connect the two-hole lug grounding cable to the side grounding point on the chassis:
(2) Power-side front bracket mounting position
(4) Chassis rail mounting position
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Figure 24):