MSATA SSD 55mmx40mm SSD to 2.5" 44PIN IDE hard Drive Disk HDD Adapter Card Brand new and high quality. The size is smaller than a 2.5 Inch SATA HDD, it can be used in laptops as 2.5 Inch SATA HDD No need for extra power & No drivers needed. Supports DOS, Win98/SE, 2000, Server 2003, XP, Vista, Win7, Win8, Sever 2008 & Mac OS & Linux. Size:12.5cm x 4cm x 0.5cm-4.92inch x 1.57inch x 0.19inch.