HP Pavilion xt800 - Desktop PC Manual page 10

6 Locate the DIMM sockets on the
motherboard.
Note:
If all of the DIMM sockets are filled, you need to
remove one of the DIMMs (see "Removing a
DIMM" on page 9).
7 If necessary to reach the DIMM socket,
remove the fan duct (see "Removing the
Fan Duct" on page 5).
8 If necessary to reach the DIMM socket,
remove the drive cage (see "Removing the
Drive Cage" on page 5).
9 Move any cabling out of the way,
if necessary.
10 Push down on the two retaining clips on
the ends of the DIMM socket.
11 Holding the new DIMM by its edges only,
remove it from the antistatic packaging.
(Avoid touching the memory chips or the
gold contacts on the DIMM.) The DIMM
has two small notches on the lower edge
that fit into raised bumps in the DIMM
socket.
12 Hold the DIMM in alignment with the
socket, aligning the notches with the
bumps.
13 Push straight down on top of the DIMM
until it is fully seated in the socket. The
retaining clips on the ends of the socket