Aaeon EMB-Q77A, Owner'S Manual

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Chapter 2: Motherboard information
2.5 System memory
This motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Module
(DIMM) sockets. A DDR3 module has the same physical dimensions as a DDR2 DIMM but
is notched differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are
developed for better performance with less power consumption.
The figure below illustrates the location of the DDR3 DIMM sockets:
EMB-Q77A 240-pin DDR3 DIMM sockets
DIMM_A1 DIMM_B1
Channel Sockets
Channel A DIMM_A1
Channel B DIMM_B1