120 Installing System ComponentsNOTICE: Never operate your system with the memory cooling shroud removed.Overheating of the system can develop quickly resulting in a shutdown of thesystem and the loss of data.7 Close the system. See "Closing the System" on page 71.Integrated NIC TOEThe TCP/IP Offload Engine (TOE) functionality of the system’s integratedNIC is activated by the LOM NIC hardware key installed in the TOE_KEYsocket on the system board (see Figure 6-2.) See the user documentation thatcame with this system for information on how to set up and configure the TOEfeature.ProcessorsYou can upgrade your processors to take advantage of future options in speedand functionality. Each processor and its associated internal cache memoryare contained in a land grid array (LGA) package that is installed in a ZIFsocket on the system board.Removing a ProcessorCAUTION: Only trained service technicians are authorized to remove the systemcover and access any of the components inside the system. See your ProductInformation Guide for complete information about safety precautions, workinginside the computer, and protecting against electrostatic discharge.1 Prior to upgrading your system, download the latest system BIOS versionon support.dell.com.2 Turn off the system, including any attached peripherals, and disconnectthe system from the electrical outlet.3 Open the system. See "Opening the System" on page 71.4 Remove the memory module cooling shrouds. See "Removing the MemoryModule Cooling Shrouds" on page 94.5 Remove the expansion cards from expansion-card riser 2. See "Removingan Expansion Card" on page 92.6 Remove expansion-card riser 2. See "Removing Expansion-Card Riser 2"on page 101.