What type of processors are compatible with this motherboard?

The motherboard is compatible with Intel Core Ultra Processors (Series 2).

What is the size of this motherboard and will it fit in a regular PC case?

The motherboard has a Micro ATX form factor with dimensions of 9.6 inches by 9.6 inches.

Yes, this motherboard supports M.2 SSDs.

Yes, the motherboard supports DDR5 RAM, including various memory standards as listed.

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GIGABYTE B860M D3HP Intel Core Ultra (Series 2) LGA 1851 Motherboard, mATX, DDR5, 2x M.2, PCIe 5.0, USB-C, 1GbE LAN, EZ-Latch