Installing Memory Modules - ECS L4S5A User 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). The
memory bus can run up to 166 MHz.
When you installed DDR333 memory modules, the memory bus can run up to
166 MHz. If you have DDR266, this can operate over a 133 MHz. For
DDR200, it can only run up to 100 MHz.
Note: SDRAM provides 800 MBps or 1 GBps data trans fer depending on
whether the bus is 100MHz or 133MHz. Double Data Rate SDRAM
(DDR SDRAM) doubles the rate to 1.6 GBps and 2.1 GBps. DDR
SDRAM uses a dditional power and ground lines and requires 184-pin
DIMM modules rather than the 168-pin DIMMs used by SDRAM.
Installation Procedure
The mainboard accommodates three
memory modules. You must install at
least one module in any of the three
slots. Each module can be installed
with 32 MB to 1 GB of memory; total
memory capacity is 2 GB.
Refer to the following to install the memory modules.
1. Push the latches on each side of the DIMM slot down.
2. 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.
3. Check that the cutouts on the
DIMM module edge connector
match the notches in the
DIMM slot:
4. 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.
5. Install any remaining DIMM
modules.
Latch
Cutout
Notch
Latch
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