Tray-less HD Removable Bay - Allow you to hot swap SATA Hard Drive without mounting kit like a CD - Supports Multi-Boot OS, swap a different OS on different drive for Booting. - Replacement for eSATA without external power and data cable issues. - Optional 1 bay to 5 bay SAS/SATA Combo available. The trayless and screwless design is for fast and easy installation. The anti-vibration air cushion design gives hard drive an extra protection from damage. Blue LED indicator enables monitor power and hard drive activities. Security key-lock prevents intrusion and theft to the most important data. Features: Standard Drive Bays: 5.25" Key lock LED indicates for HDD, Power Auto-eject handle with patent design Easy to install No software or driver required Unlimited HDD Capacity Interface SATA I/II