Memory System

.3 SETUP H/W

3.HARDWARE SETUP

3.5.2DIMM Installation

Insert the module(s) as shown. Because the number of pins are different on either side of the breaks, the module will only fit in the orientation shown. DIMMs are longer and have different pin contact on each side and therefore have a higher pin density. SIMMs have the same pin contact on both sides.

Lock

20 Pins

60 Pins

CUC2000

88 Pins

CUC2000 168-Pin DIMM Sockets

The DIMMs must be 3.3V Unbuffered for this motherboard. To determine the DIMM type, check the notches on the DIMMs (see figure below).

168-Pin DIMM Notch Key Definitions (3.3V)

DRAM Key Position

Voltage Key Position

RFU

Unbuffered

5.0V

Reserved

Buffered

 

3.3V

The notches on the DIMM module will shift between left, center, or right to identify the type and also to prevent the wrong type from being inserted into the DIMM slot on the motherboard. You must ask your retailer the correct DIMM type before pur- chasing. This motherboard supports four clock signals per DIMM slot.

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ASUS CUC2000 User’s Manual