H3C Technologies H3C S7500E Series Switches - Manual (Page 17)

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Figure 2 Airflow for other models of the S7500E series
(1) Air intake for power modules (2) Air exhaust for power modules
(3) Air intake for the chassis (4) Air exhaust for the chassis
Space
For adequate ventilation and ease of maintenance, make sure the clearance between the rack and walls
or other devices is at least 1 m (3.28 ft), and the headroom in the equipment room is no less than 3 m
(9.84 ft).
Tools and equipment
Installation tools and equipment are not provided with the switch. Prepare them as required.