Avalue Technology ERX-Q77, User Manual, Page: 30 / 92

ERX-Q77
User’s Manual
30 ERX-Q77
User’s Manual
2.6 System Memory
2.6.1 Overview
The motherboard comes with four 240-pin Double Data Rate 3 (DDR3) Dual Inline Memory
Modules (DIMM) sockets.
A DDR3 module has the same physical dimensions as a DDR DIMM but has a 240-pin
footprint compared to the 240-pin DDR2 DIMM. DDR3 DIMMs are notched differently to
prevent installation on a DDR2 DIMM socket. The following figure illustrates the location of
the sockets:
240-Pin DDR3 DIMM sockets
Channel Socket
Channel A
DIMMA1
DIMMA2
Channel B
DIMMB1
DIMMB2