10 Things That Can Be Plugged in PCIe Slots - PC Guide 101
PCIe 3.0 or PCIe 2.0 x4, x8, or x16 slot; M Key PCIe M.2 NMVe SSD (2230/2242/2260/2280mm).
Mainboard ASUS ROG Maximus Z790 Apex Encore
Expansion Slots. Intel® 12th Gen Processors. 2 x PCIe 5.0 x16 slots (supports x16 or x8/x8 modes)*. Intel® Z690 Chipset**. 1 x PCIe 3.0 x4 slot. 1 x PCIe 3.0 x1 ...
Mainboard ASROCK B550M PRO4 (AMD B550, Socket ...
Up to 128GB Unbuffered ECC UDIMM, DDR4-3200MHz, in 4 DIMM slots; 1 PCIe 4.0 x8, 1 PCIe 4.0 x8 (in x16 slot), 1 PCIe 4.0 x4 (in x8 slot)1 PCIe 3.0 x2 (in x4 slot)