This is a black and gray 2.5-inch HDD/SSD case called MOBILE BOX from CENTURY (model number CMB25U3BK6G). It features a built-in cable storage and requires no external power supply. It supports USB 3.2 Gen 1 (3.0 at the time of release) and SATA 6Gbps for high-speed data transfer. It's a beautiful item, complete with the instruction manual, 7mm-thick HDD/SSD fixing cushions, and the original packaging. For detailed specifications, please refer to the manufacturer's website below: https://www.century.co.jp/products/cmb25u36g.html Manufacturer's direct sales price: 2,075 yen (tax included) Amazon price (excluding shipping): 1,939 yen (tax included)