Icy Dock Internal Sata Hard Drive Rack 5.25" to 3.5" Internal screwless enclosure. It provides the user with tray-less, easy hard drive access and hot-swap capabilities without having to screw in a tray. * Drive Fit : Hot Swappable 1 x 3.5" SATA I or II.* Device Fit : 1 x 5.25 device bay.* User friendly Screw-less design just plug in the hard drive and play.* Multi-drive exchangeability, hot swap capability & maintenance capabilities.