Asus CUSI-M CUSI-M User Manual - Page 21

DIMM Memory Installation

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3. HARDWARE SETUP 3.5.2 DIMM Memory 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. DIMM modules are longer and have different pin contact on each side and therefore have a higher pin density. SIMM modules have the same pin contact on both sides. Lock 88 Pins 01 ® CUSI-M CUSI-M 168-Pin DIMM Sockets 60 Pins 20 Pins 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) 3. H/W SETUP System Memory DRAM Key Position RFU Unbuffered Buffered Voltage Key Position 5.0V Reserved 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 purchasing. This motherboard supports four clock signals. ASUS CUSI-M User's Manual 21

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ASUS CUSI-M User’s Manual
21
3. HARDWARE SETUP
System Memory
3. H/W SETUP
3.5.2
DIMM Memory 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. DIMM mod-
ules are longer and have different pin contact on each side and therefore have a
higher pin density. SIMM modules have the same pin contact on both sides.
CUSI-M 168-Pin DIMM Sockets
Lock
20 Pins
60 Pins
88 Pins
CUSI-M
®
0
1
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
Unbuffered
RFU
Buffered
Reserved
3.3V
5.0V
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.