Asus MEW-B - Manual (Page 25)

ASUS MEW-B User’s Manual 25
3. HARDWARE SETUP
System Memory 3. H/W SETUP
3.5.2 DIMM 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.
MEW-B 168-Pin DIMM Sockets
Lock
20 Pins 60 Pins 88 Pins
0 1
®
MEW-B
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 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 per DIMM slot.