ASROCK X370 Pro BTC+ Manual Del Usuario página 23

2.3 Installing Memory Modules (DIMM)
This motherboard provides one 288-pin DDR4 (Double Data Rate 4) DIMM slot.
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.
X370 Pro BTC+
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