Dimm Memory Installation Procedures - Asus SP98AGP-X User Manual

III. INSTALLATION

DIMM Memory Installation Procedures:

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. DRAM
SIMM modules have the same pin contact on both sides. SDRAM DIMM modules
have different pin contact on each side and therefore have a higher pin density.
20 Pins 60 Pins 88 Pins
Lock
168 Pin DIMM Memory Sockets
The Dual Inline Memory Module (DIMM) memory modules must be 3.3Volt Un-
buffered Synchronous DRAM (SDRAM) or Extended Data Output (EDO) . 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 to be inserted into the DIMM slot on the
motherboard. You must ask your retailer for the specifications before purchasing.
Four clock signals are supported on this motherboard.
20 ASUS SP98AGP-X User's Manual