Fits all 3.5 inch SATA hard drives in a front-accessible 5.25 inch PC drive bay without capacity limitations; Supports SATA III with data transfer rates of up to 6 Gbps. Tool-free mounting process, just lock your 3.5" hard drive in, mount in your 5.25" CD/DVD drive bay, and connect through SATA interface. Automatically detected under Windows XP / Vista / 7/8 / 8.1 / 10; Supports hot swapping: plug and play while the PC runs without slowing down or corrupting files. Durable stainless steel construction for superior heat dissipation. The on/off button on the front of the unit allows you to switch between connection and sleep mode. If for any reason you are dissatisfied with your purchase, just let us know and we promise to make it right.