Dimm Memory Installation - Asus P2B-N User Manual

III. INSTALLATION

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 as 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
P2B-N 168-pin DIMM Memory Sockets
The Dual Inline Memory Module (DIMM) must be 3.3V Unbuffered for this moth-
erboard. You can identify the type of DIMM module by the illustration below:
168-Pin DIMM Notch Key Definitions (3.3V)
Voltage Key Position
DRAM Key Position
Reserved
RFU Unbuffered
5.0V
3.3V
Buffered
The notch on the DIMM module will shift between left, center, or right to identify the
type and also to prevent the wrong type of DIMM to be inserted into the DIMM socket
on the motherboard. Four clock signals are supported on this motherboard. You must
ask your retailer for the specifications before purchasing memory modules.
20 ASUS P2B-N User's Manual