Dell Precision 420 - Manual (Page 14)

Removing a RIMM
To remove a RIMM, press the securing clips outward simultaneously until the RIMM disengages from the socket (see Figure 8). It should pop out
slightly.
NOTICE: To avoid damage to the memory module, press the securing clips with equal force applied at each end of the socket.
Figure 8. Removing a RIMM
Microprocessor Upgrades
To take advantage of future options in speed and functionality, you can add a second processor or replace either the primary or secondary
processor.
NOTICE: The second processor must be of the same type and speed as the first processor.
Downloading Instructions for Installing Dual Processor Support
1. Go to http://support.dell.com/.
2. Complete the one-time registration process, if you have not already done so.
3. Click Dell Knowledge Base under Support Tools, enter second processor in the Search Documents by Words in Title option,
and click Go.
4. Click the document that corresponds to the operating system you are running.
Each processor and its associated level-2 (L2) cache memory are contained in an SECC2 cartridge that is installed in a dedicated connector on
the system board. In systems with only one processor, a terminator card is installed in the secondary processor connector. The following
subsection describes how to install or replace an SECC2 cartridge in either the primary or secondary processor connector.
Adding or Replacing a Microprocessor
The following items are included in a processor upgrade kit:
l The new processor SECC2 cartridge with attached heat sink
l
Two heat-sink securing thumbscrews
Use the following procedure to add or replace an SECC2 cartridge.
NOTICE: See "Protecting Against Electrostatic Discharge" in your System Information Guide .
1 Securing clips (2)
2 Slot
3 Securing tab
1 Securing clips (2)
NOTE: Only the Microsoft® Windows NT® 4.0 and Windows® 2000 and higher operating systems support dual microprocessors.
NOTE: Dell recommends that only a technically knowledgeable person perform this procedure.