Asus TX97-E DIMM Memory Installation, 168-PINDRAM DIMM Notch Key Definitions, RFU, Reserved, Buffered, Unbuffered, DRAM Key Position, Voltage Key Position

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. SIMM modules have the same pin contact on both sides. DIMM modules are longer and have different pin contact on each side and therefore have a higher pin density.

20 Pins

60 Pins

2SocketDimm 1SocketDimm

	88 Pins
168 Pin DIMM Memory Sockets	Lock

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:

III. INSTALLATION (System Memory)

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

168-PIN DRAM 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 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.

ASUS TX97-E User’s Manual 21