Removing/Installing a DIMM/RIMM

Removing/Installing a DIMM/RIMM
When removing a DIMM or a RIMM and using proper ESD prevention techniques, push down on
the DIMM retaining tabs that clasp over the DIMM. Be careful not to overextend the tabs when
pushing on them. If a plastic tab breaks, the only solution is to replace the motherboard. The
DIMM/RIMM lifts slightly out of the socket. Ensuring you are grounded to prevent ESD, lift the
module out of the socket once it is released. Figure 6.10 shows how to remove a DIMM/RIMM.

A DIMM/RIMM has one or more notches on the bottom where the gold or tin contacts are
located. The DIMM inserts into the memory socket only one way. The DIMM memory socket has
two tabs that align with the DIMM notches. Look at the DIMM and notice where the DIMM
notches are located. Look at the DIMM socket and notice where the tabs in the socket are located.
The DIMM will not insert into the memory socket unless it is oriented properly.
A DIMM/RIMM is inserted straight down into the socket, not at a tilt like the SIMM or a
SO-DIMM. Make sure the side tabs are pulled out before you insert the DIMM, and close the tabs
over the DIMM once it is firmly inserted into the socket. If the DIMM/RIMM does not go into the
slot easily, do not force it and check the notch or notches for correct alignment. However, once
the DIMM is aligned correctly into the slot, push the DIMM firmly into the slot and the tabs
should naturally close over the DIMM or on the sides of the DIMM. Figure 6.11 illustrates how
to insert a DIMM or a RIMM.