Installing System Components 93
Activating the Integrated NIC TOE
To add TCP/IP Offload Engine (TOE) functionality to the system’s integrated NIC, install the TOE
NIC hardware key in the TOE_KEY socket on the system board (
see Figure6-2.)
Processors
You can upgrade your processor(s) to take advantage of future options in speed and functionality. Each
processor and its associated internal cache memory are contained in a land grid array (LGA) package that is
installed in a ZIF socket on the system board.

Removing a Processor

CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the
components inside the system. See your Product Information Guide for complete information about safety
precautions, working inside the computer, and protecting against electrostatic discharge.
1Prior to upgrading your system, download the latest system BIOS version on support.dell.com.
2
Turn off the system, including any attached peripherals, and disconnect the system from the electrical
outlet.
3
Open the system. See "Opening the System" on page 54.
4
Remove the fans. See "Removing a System Fan" on page65
5
Remove the fan bracket. See "Removing the Fan Bracket" on page68.
NOTICE: When you remove the heat sink, the possibility exists that the processor might adhere to the heat sink
and be removed from the socket. It is recommended that you remove the heat sink while the processor is still
warm.
NOTICE: Never remove the heat sink from a processor unless you intend to remove the processor. The heat sink is
necessary to maintain proper thermal conditions.
6
Press the blue tab on the end of one of the heat-sink retention levers to disengage the lever, then lift
the lever 90 degrees. See Figure3-28.
Book.book Page 93 Friday, February 3, 2006 11:09 AM