Install the P12V front bus bar

Use this information to install the P12V front bus bar.

Procedure

1. Align the P12V front bus bars to the screw holes on the right-side GB200-NVL4 board and the host board. Then, install them to the tray.
   Note

   • The P12V front bus bars are directional. Make sure the bus bars are positioned as shown in the illustration below.

   • Make sure the black bus bars and red bus bars are arranged as illustrated.

   Figure 1. Installing P12V front bus bars
   
   

   Figure 2. Black and red P12V front bus bars placement rule
   
   
2. With a torque screwdriver set to the proper torque, install sixteen (16x) screws to secure the P12V front bus bars to the tray.
   1. Install eight (8x) T30 screws to secure the bus bars to the right-side GB200-NVL4 board.
   2. Install eight (8x) PH2 screws to secure the bus bars to the host board.
   Note

   For reference, the torque required for the screws to be fully tightened/removed is 15.0 +/- 0.5 in-lbs, or 1.69 +/- 0.056 N-m.

   Figure 3. Installing screws to secure the P12V front bus bar