Installing Memory Modules - Elitegroup Computer Systems 748-A Manual

Installing Memory Modules

This mainboard accommodates three 184-pin 2.5V unbuffered Double Data
Rate (DDR) SDRAM memory modules. The memory chips must be standard
or registered SDRAM (Synchronous Dynamic Random Access Memory). You
can install 3 unbuffered DIMM DDR 266/333 or 2 unbuffered DIMM DDR 400.
Each module can be installed with 32 MB to 1 GB of memory; total memory
capacity is 3 GB.
Note: Double Data Rate SDRAM (DDR SDRAM) doubles the rate to 1.6 GBps
and 2.1 GBps. DDR SDRAM uses additional power and ground lines and
requires 184-pin DIMM modules rather than the 168-pin DIMMs used by
SDRAM.
Do not remove any memory module from its antistatic packaging until
you are ready to install it on the mainboard. Handle the modules only by
their edges. Do not touch the components or metal parts. Always wear
a grounding strap when you handle the modules.
Refer to the following to install the memory modules.
1. This mainboard supports unbuffered DDR SDRAM only. Do not attempt to
insert any other type of DDR SDRAM into the slots.
2. Push the latches on each side of the DIMM slot down.
3. Align the memory module with the slot. The DIMM slots are keyed with
notches and the DIMMs are keyed with cutouts so that they can only be
installed correctly.
4. Check that the cutouts on the DIMM module edge connector match the
notches in the DIMM slot.
5. Install the DIMM module into the slot and press it firmly down until it seats
correctly. The slot latches are levered upwards and latch on to the edges
of the DIMM.
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