This is an SSD drive with a 256 GB storage capacity. The form factor is M.2, which allows the hard drive to connect directly to the motherboard.
From Amazon
Verbatim Vi560 S3 M.2 SSD - internal SSD 256GB - Solid State Drive - SATA III M.2 interface - internal SSD drive with 3D NAND technology - high performance SSD 256GB - up to 560MB/s - blue
This product is also available at 3 unverified merchants.