Highlights: Plug & Play Fast & Reliable connection, just as the primary HDD. Fully integrated into Laptop, no cables / PSU / software driver needed. Dual boot, Support installation of 2nd Operating System on the 2nd HDD and boot selection; 4 Screws for firmer HDD installation; Dual LED Indicator: Power/Work LED. Adopt SATA 3.0 chipset, support SATA 1.0 & SATA 2.0 & SATA 3.0; Supporting Hard Drive Capacity: 2TB Internal Interface: SATA Size: 2.5″ Case Material: Aluminum External Interface: eSATA External Interface: SATA Supporting Hard Drive Thickness: 12.7mm Support SATA Version: SATA I / SATA II / SATA III Compatible: For ODD CD DVD ROM Optibay Optical Bay Type: Second HDD Caddy Adapter Product Description: 1. 100% Brand New & Never Used Item; 2. The thickness of this adapter is 12.7mm; 3. Internal Interface: SATA (for 2.5″ HDD/SSD); 4. External Interface: SATA (for Mainboard); 5. The 2nd Hard Disk Drive Caddy / Adapter to bring you new maximum data storage flexibility. With the second HDD in your Laptop, 6. You can speed to backup important applications and critical data ( Simply remove your CD-ROM drive and put the Caddy (with the added hard drive) in its place. What is in the box: 1 x Laptop Caddy Weight: 0.4   SKU: 210509052234