ESU25 USB 2.0 Aluminum Housing Case with two color options (Black / Silver) allows you to upgrade 2.5-inch IDE disk drives to USB 2.0 ATAPI host commands. Provides the ability to upgrade and support a variety of ATA/ATAPI based 2.5-inch disk drives without changing the peripheral hardware. Provides true Plug & Play and high performance to support Hard Disk suitable for desktop, notebook, palmtop, or pen bas computers.