ASRock H81M-HG4 R4.0 User Manual - Page 19

Installing Memory Modules (DIMM)

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2.3 Installing Memory Modules (DIMM) This motherboard provides two 240-pin DDR3/DDR3L (Double Data Rate 3) DIMM slots, and supports Dual Channel Memory Technology. 1. For dual channel configuration, you always need to install identical (the same brand, speed, size and chip-type) DDR3/DDR3L 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/DDR3L slot; otherwise, this motherboard and DIMM may be damaged. The DIMM only fits in one correct orientation. It will cause permanent damage to the motherboard and the DIMM if you force the DIMM into the slot at incorrect orientation. 14 English

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14
English
2.3
Installing Memory Modules (DIMM)
°is motherboard provides two 240-pin DDR3/DDR3L (Double Data Rate 3)
DIMM slots, and supports Dual Channel Memory Technology.
°e DIMM only fits in one correct orientation. It will cause permanent damage to
the motherboard and the DIMM if you force the DIMM into the slot at incorrect
orientation.
1. For dual channel configuration, you always need to install identical (the same
brand, speed, size and chip-type) DDR3/DDR3L 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/DDR3L
slot; otherwise, this motherboard and DIMM may be damaged.