This is a sata to usb connector for connect sata hard drive to a pc. it works like external sata case for hard drive. it is an original profuct and sealed. it is usb 3.0 kit. which comes with other converters or connectors too. very effective and effectient for reading and writing or tranfering files to and from a hard drive like a laptop sata hard drive. you don't have to put it in a case but just connect the sata part to the hard drive.