Install a PCIe switch board heat sink

Follow instructions in this section to install a PCIe switch board heat sink. The procedure must be executed by a trained technician.

Procedure

1. Apply a blob of new thermal grease (0.3 ml) onto the center of the heat spreader.
   Figure 1. Thermal grease application
   
   
2. Install the PCIe switch board heat sink.
   1. Align the PCIe switch board heat sink with the four screw holes on the PCIe switch board; then, gently place the PCIe switch board heat sink onto the PCIe switch board.
   2. Follow the screw sequence specified on the heat-sink label, and turn the four screws clockwise a few turns until the screw threads engage in the PCIe switch board.
   3. Follow the screw sequence specified on the heat-sink label, and fully tighten the four screws to secure the PCIe switch board heat sink.
   Note

   Loosen or tighten the screws with a torque screwdriver set to the proper torque. For reference, the torque required for the screws to be fully loosen or tighten is 0.9 newton-meters, 8 inch-pounds.

   Figure 2. PCIe switch board heat sink installation