ASROCK Z790 PG LIGHTNING/D4 - 2.3 Installing Memory Modules (DIMM)

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Z790 PG Lightning/D4
2.3 Installing Memory Modules (DIMM)
is motherboard provides four 288-pin DDR4 (Double Data Rate 4) DIMM slots,
and supports Dual Channel Memory Technology.
Recommended Memory Conguration
1 DIMM
2 DIMMs
4 DIMMs
A1 A2 B1 B2
V
A1 A2 B1 B2
V V
A1 A2 B1 B2
V V V V
1. For dual channel conguration, you always need to install identical (the same
brand, speed, size and chip-type) DDR4 DIMM pairs.
2. It is unable to activate Dual Channel Memory Technology with only one or three
memory module installed.
3. It is not allowed to install a DDR, DDR2 or DDR3 memory module into a DDR4
slot; otherwise, this motherboard and DIMM may be damaged.
4. e DIMM only ts 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.