Microsoft mainboard, K7S5A manual Installation Procedure, DDR Sdram Module

DDR SDRAM provides 800 MBps or 1 GBps data transfer depending on whether the bus is 100 MHz or 133 MHz. It doubles the rate to 1.6 GBps and

2.1GBps by transferring data on both the rising and falling edges of the clock. DDR SDRAM uses additional power and ground lines and requires 184-pin 2.5V unbuffered DIMM module rather than the 168-pin 3.3V unbuffered DIMMs used by SDRAM.

Installation Procedure

You must install at least one memory module in order to use the main- board.

Note: You cannot use DDR SDRAM and SDRAM simultaneously.

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:

Latch

Latch

Cutout

Notch

Cutouts

Notches

Latch

Latch

DDR SDRAM Module SDRAM Module

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.

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