Asus P/I-P55TVP4 SDRAM Memory Installation Procedures:, 168-PINSDRAM DIMM Notch Key Definitions, RFU, Reserved, Buffered, Unbuffered, SDRAM Key Position, Voltage Key Position

III. INSTALLATION

SDRAM Memory Installation Procedures:

Insert the module 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 pint contact on each side and therefore have a higher pin density.

88 Pins

60 Pins

20 Pins

Lock

168 Pin DIMM Socket & SDRAM Module

The Dual Inline Memory Module (DIMM) memory module must be 3.3Volt Unbuffered Synchronous DRAM (SDRAM) of either 8, 16, 32, or 64MB. You can identify the type of DIMM module by the illustration below:

III. INSTALLATION (DRAM Memory)

SDRAM Key Position		Voltage Key Position
RFU	Unbuffered	5.0V	Reserved
Buffered			3.3V

168-PIN SDRAM DIMM Notch Key Definitions

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. 4 clock signals are supported on this motherboard.

ASUS P/I-P55TVP4 User's Manual 13