This is an SSD drive with a 256 GB storage capacity. This model has an M.2 form factor.
From Amazon
ADATA XPG S40G 256GB RGB M.2 Internal Solid State Drive Gaming-SSD Hard Disk, black AS40G256GTC
Neocomputers
ADATA 256GB XPG Spectrix S40G RGB M.2 NVMe SSD, M.2 2280, PCIe 3.0, 3D TLC NAND, R/W 3500/1200 MB/s, 210K/230K IOPS
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