[SOLVED] What RAM does my motherboard support?

Nov 11, 2021
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Hello I have a Dell 0kjcc5 motherboard and currently I have 64 (4x16) GB RDIMM DDR4 2400 MHz 1.2V 288-pin RAM memory installed (Samsung M393A2K43BB1-CRC0Q). Can I replace the RDIMM with (U)DIMM RAM perhaps? Or do I strictly have to use only RDIMM?

The same question goes for the motherboard Dell 0HHV7N.

Thank you!