Features: 1.100% brand new and high quality 12.5mm thick 2.The inside of the caddy has a plastic holder to absorb noise and vibrations from a 2nd HDD/SSD 3.Supports the standard 2.5-inch SATA hard drive, CD-ROM for 12.5mm SATA-bit interface 4.standard SATA-13Pin (6 + 7) optical drive interface, supports SATA-I / SATA-II / SATA-III transmission standards. 5.Dual boot, Support installation of 2nd Operating System on the 2nd HDD and boot selection. specification: 1. 100% brand new and high quality 12.7mm thick. 2. The inside of the caddy has a plastic holder to absorb noise and vibrations from a 2nd HDD/SSD 3. Supports the standard 2.5-inch SATA hard drive, CD-ROM for 12.7mm SATA-bit interface 4. Standard SATA-13Pin (6 + 7) optical drive interface, supports SATA-I / SATA-II / SATA-III transmission standards. 5. Dual boot, Support installation of 2nd Operating System on the 2nd HDD and boot selection. s: Support: SATA Support hard disk: 2.5 HDD, SATA, SATAII SDD Compatible Models: Laptop with a 12.7mm thick DVD-ROM Color: black Product Net Weight: 100g Package Included: 1 x Universal 2nd 12.7mm Hard Drive Optical Bay Caddy 1 x Screwdriver Note: Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.