P5SD-B User’s Manual
3:
Reconfiguring Your Mainboard – 3.8
Installing Memory Modules
Modules are designed so that they will only insert in one ori-
entation. If you have trouble inserting the connector edge of a
module into a socket, it may be oriented the wrong way. Turn
the module around and try again. You shouldn’t need to force it.
To install a SIMM module, insert it into the socket at about a
45° angle and then push it up into the retaining clips so that it
snaps in place and is at a 90° angle to the board.
To install a DIMM module, look at the module and note the
position of the shorter section of the connector edge that plugs
into the DIMM socket. Note the position of the shorter section
of the socket. Orient the module so that these match and press
the module into the socket at a 90° angle. The retaining clamps at
each end of the socket will rotate upwards automatically.
If All Sockets Are Occupied
If you want to install more memory and there are no sockets
available, you must remove some installed modules and replace
them with upgrade modules.
If you have to do this, make sure to identify what type of
memory is already installed. In some cases, there may be a mix
of module types. You can tell this by checking the configuration
screen that appears while the computer is starting up.
Remove the lowest performance and smallest size modules
and replace them with the upgrade. EDO is faster than Fast Page
and SDRAM is faster than EDO. For example, if you have the
following configuration and you plan to install two 32MB EDO
SIMM modules:
• SIMM 1 & 2: 8MB Fast Page mode modules
• SIMM 3 & 4: 16MB EDO modules
You should remove the two 8MB FP modules because they
are lower performance and replace them with the memory up-
grade, resulting in the greatest performance gain.