1、Effortless screw-free design: easy for user to replace hard disk. 2、Thoughtful short-circuit conservation: giving your hard disk considerate conservation. 3、Independent switch with LED light: low power consumption, beneficial to hard disk. This mobile rack has unique shock-proof function which can give your hard disk a secure environment to operate. Besides, its exposure design lowers the heat of hard disk effectively and facilities the installation and change process of hard disk. Features: Effortless screw-free design: easy for user to replace hard disk. Thoughtful short-circuit conservation: giving your hard disk considerate conservation. Independent switch with LED light: low power consumption, beneficial to hard disk. Dual power port: meeting different power supplies of different cases. Wide compatibility: fitting for all 2.5/3.5inch SATA HDD SSD. Supporting hot-swap function. Support 6TB (maximum capacity) HDD. Specifications: Device fit: 2.5/3.5'' SATA HDD/SSD Drive fit: 5.25'' drive bay of PC Material: Stainless steel, ABS Color: Black Supporting system: Win XP/7/8/8.1, Vista 200.3, Mac OS Item size: 14.8 * 11.1 * 4.3cm / 5.8 * 4.4 * 1.7in (L * W * H) Item weight: 167g / 5.9oz Package size: 17.4 * 12 * 4.8cm / 6.8 * 4.7 * 1.8in (L * W * H) Package weight: 323g / 11.4oz Note: Please turn off the power before insert your hard disk. Package list: 1 * Mobile rack 1 * User manual (English) 1 * Mobile rack 1 * User manual (English)