2.3 Installation of Memory Modules (DIMM)
This motherboard provides two 240-pin DDR3 (Double Data Rate 3) DIMM
slots, and supports Dual Channel Memory Technology.
1. For dual channel coniguration, you always need to install identical (the
same brand, speed, size and chip-type) DDR3 DIMM pairs.
2. It is unable to activate Dual Channel Memory Technology with only one
memory module installed.
3. It is not allowed to install a DDR or DDR2 memory module into a DDR3
slot; otherwise, this motherboard and DIMM may be damaged.
The DIMM only its in one correct orientation. It will cause permanent dam-
age to the motherboard and the DIMM if you force the DIMM into the slot at
incorrect orientation.
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ASRock FM2A78M-ITX+ Motherboard