3.Reach under the subassembly and grasp the two main system board power supply cables, labeled P4 and P5. Each connector has six pin holes and a large tab on one side, as shown below.

There is one 12-pin power supply socket on the right side of the main system board (toward the back) that holds both of the power supply connectors, as shown below.

power supply

B - 4 8 Installing and Removing Disk Drives