Feature: 1. Good Heat Dissipation: SATA to SATA 2nd HDD SSD enclosure has five holes hollow out, super heat dissipation, and the hard disk is fixed by four screws at the bottom, which is faster and less labor intensive. 2. Dual Channel Protection: 12.7mm universal hard drive caddy case tray adopts dual channel protection, protection switch, and improves use efficiency. 3. SATA3.0 Interface: Hard drive caddy adapter tray adopts high speed SATA3.0 transmission interface to improve transmission efficiency. 4. Easy to Install: 1 screwdriver, 4 screws and 1 universal baffle are included for DIY installation, easy to install, and the computer can be quickly upgraded by replacing the optical drive. 5. Wide Compatibility: Hard drive caddy tray is compatible with most brands and models of laptops, universal 12.7mm thickness SATA interface optical drive bay laptops, supports 2.5inch hard drives, SATA, SATAII, SDD. Specification: Item Type: SATA to SATA 2nd HDD SSD Enclosure Product Material: Aluminum Alloy Scope of Application:For 12.7mm Thickness SATA Interface Optical Drive Bit Notebook Computer Applicable Hard Drives:For 2.5inch SATA Interface Mechanical HHD and SSD Interface: SATA3.0. Package List: 1 x Bracket1 x Screwdriver1 x Baffle4 x Screw