1、As long as your CD-ROM thickness on your laptop is 9.5/17MM, you can use it. 2、Five-hole hollow, super heat dissipation, fixed hard disk by four screws at the bottom, faster and more labor-saving. 3、Dual channel protection, protect the ON/OFF switch. The bottom is fixed by four screws, and the 3D precision positioning hard disk. 4、High-speed SATA0 transmission interface.Connecting to the computer does not affect the speed (Downward compatible with SATA, SATA1, SATA2). 5、A new generation of all-plastic CD-ROM hard drive bracket, plastic material, cheap and easy to use. Features:  1. As long as your CD-ROM thickness on your laptop is 9.5/ 12.7MM, you can use it. 2. Five-hole hollow, super heat dissipation, fixed hard disk by four screws at the bottom, faster and more labor-saving. 3. Dual channel protection, protect the ON/OFF switch. The bottom is fixed by four screws, and the 3D precision positioning hard disk. 4. High-speed SATA 3.0 transmission interface.Connecting to the computer does not affect the speed (Downward compatible with SATA, SATA1, SATA2). 5. A new generation of all-plastic CD-ROM hard drive bracket, plastic material, cheap and easy to use. Specification: Product Features: ABS + aluminum Applicable Models: 9.5/ 12.7mm CD-ROM Laptop Hard Disk Type: Support solid State Disk Box and Mechanical Hard Disk Package List: 1 x Bracket 1 x Screwdriver 4 x Screws 1 x Strip Bottom Baffle Note: Step for usage Step 1: Insert the disk drive bracket. Step 2: Use the screwdriver tighten hard disk fixed screw, the hard drive is fixed on the bracket. Step 3: You have to complete the installation of the hard drive bracket and hard disk, next only to the hard drive bracket as a drive into the computer. Step 4: Remove the laptop drives. Step 5: Install the bracket assembled hard disk drive's former location.