H3C Technologies H3C S12500 Series Switches - Manual (Page 13)

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Figure 2 S12504 rear view
(1) Fan tray (2) Power entry module (PEM) (3) Grounding screw
(4) Ventilation panel (5) ESD-preventive wrist strap port (6) Switching fabric module slots (slots 6 to 9)
The S12504 chassis has the following slots and components:
• Two MPU slots and four LPU slots at the front, and four switching fabric module slots at the rear.
• One power frame, at the bottom of the chassis, can accommodate up to six power supplies.
• One vertically oriented fan tray at the rear of the chassis. For the ventilation direction inside the
chassis, see "Preparing for installation."