To add an additional processor:
1Turn off the system and disconnect the power cord, modem cord (if installed), and all external peripheral devices.
2Remove the left side cover panel. (See “Removing the side cover” on page 18 and “Preventing static electricity discharge” on page 15.)
3Hold the new processor over the empty processor socket and verify that pin 1 on both the processor and the socket are aligned. Pin 1 is near the marked corner.
4Gently place the new processor into the socket.
5Secure the processor by lowering the locking lever until the lever latches into place. The processor will slip into place without pressure when aligned correctly.
6Install the heatsink. (See “To replace the heatsink:” on page 43.)
7Connect the power supply cable of the processor fan to the second CPU fan connector on the system board (See “System board” on page 6 for location).
8Close the case by following the instructions on page 20.
9Reconnect the cords you removed, then turn on your computer.
10Run the muloader.exe program that was included in the processor upgrade kit in order to update the microcode table and enable the second processor.
44Replacing and Adding System Components