This is an Apacer Industrial-grade 256GB M.2 2242 Solid State Drive (SSD). Model number APM2T42SM22256GTN-4ETMG-DE, Part Number 81.5AHS2.AT4E0BT-DE. It features a SATA III 6.0 Gbps interface and a compact 2242 (22mm x 42mm) form factor, making it ideal for embedded systems, industrial PCs, and thin clients. This unit has been tested and is in working condition. Only the SSD shown in the photos is included; no mounting screws or original packaging are provided.
eBay