H3C Technologies H3C S12500 Series Switches - Manual (Page 104)

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Figure 83 S12508 rear view
(1) Power receptacles (2) Upper fan tray
(3) Lower fan tray (4) Grounding screw
(5) ESD wrist strap port (6) Switching fabric module slots (slots 10 to 18)
(7) Chassis air exhaust vents (8) Power switch
(9) Power supply air exhaust vents (10) Power monitoring module