This SSD hard drive has a 256 GB storage capacity and works faster than an HDD drive. The form factor is M.2 and it connects the hard drive directly to the motherboard.
From Overclockers
Intel Optane H10 16GB + 256GB M.2 PCI-e 3D Point Xpoint QLC SSD
CCL Computers AMD
256GB Intel Optane Memory H10 M.2 2280 PCI Express 3.0 x4 NVMe Solid State Drive
BuyKingston
Intel Optane HBRPEKNX0101A01 internal solid state drive M.2 256 GB PCI Express 3.0 3D XPoint + QLC 3D NAND NVMe