This is an SSD drive with a 1 TB storage capacity. The form factor is M.2, which allows the hard drive to connect directly to the motherboard.
From Quzo
Western Digital SN750. SSD capacity: 1 TB SSD form factor: M.2 Read speed: 3470 MB/s Write speed: 3000 MB/s Component for: PC
EE Store
WD 1TB Black SN750 NVMe M.2 2280 PCIE Gen3 SSD
Gadcet
WD_BLACK SN750 1TB M.2 2280 PCIe Gen3 NVMe Gaming SSD up to 3430 MB/s read speed