Dell PowerEdge 4300 Installation And Troubleshooting Manual page 136

To remove a DIMM, press down and outward on the ejectors on each end of the
socket until the DIMM pops out of the socket (see Figure 8-7).
ejectors (2)
The microprocessor is contained within a single-edge contact (SEC) cartridge and heat
sink assembly. The system board has two guide bracket assemblies that hold the SEC
cartridge and heat sink assemblies. If your system has only one microprocessor, the
unused guide-bracket assembly connector must contain a terminator card. If you are
adding a microprocessor, it must have the same operating frequency as the installed
microprocessor. For example, if the system has a 400-MHz microprocessor, the addi-
tional microprocessor must also be a 400-MHz microprocessor.
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