This 2-bay internal SATA mobile rack provides a 2.5" SSD/HDD bay and a 3.5" HDD bay for 5.25" drive bay. No drivers or software required, supports hot swap, plug and play. Specially design 2 USB 3.0 port and ON/OFF power switch controlling both 2.5" and 3.5" drive. Features: Supports 1 * 2.5 inches SSD/HDD and 1 * 3.5" HDD (SATA III/II/I(6.0/3.0/1.5 Gbps). Provides 2 port USB 3.0 and power ON/OFF switch controlling the two bays. Strong metal structure, anti shock design and reliable. No drivers or software required, plug and play. Pull/push bar designed for easy insertion and ejection of HDD & SSD. LED indicator for power and drive activity. Supports 50,000 cycles hot swap. Support different thickness of 3.5" HDD and 2.5" SSD/HDD of 7-9.5mm thick. Specifications: SATA bay: 2 bays(1 * 2.5" and 1 * 3.5") Interface: SATA + USB 3.0 System: for Windows 7/8/2000/XP/Vista, for Mac 10.2 and above Material: Aluminum alloy + ABS Item size: 14.8 * 18.3 * 4.2cm / 5.82 * 7.20 * 1.65in (L * W * H) Item weight: 472g / 1.042Lb Package size: 22.4 * 17.3 * 5.5cm / 8.81 * 6.81 * 2.16in (L * W * H) Package weight: 625g / 1.378Lb Package List: 1 * Internal SATA rack 2 * SATA 7pin signal cable 1 * 15pin to 4pin power cable 4 * Screws 1 * User manual(Chinese and English)