Package Including: <br />- 1 X E-More Hard Drive Caddy Tray <br />- 1 X Screw Driver <br /><br />Specification: <br />- Material: Aluminum  <br />- Color: Black & Silver  <br />- Remark: 12.7mm high｣ｬ with screwdriver  <br />- Support: SATA III (downward compatible SATA II / SATA I)  <br />- Support maximum speed: 6Gps  <br />- Support maximum additional storage space: 1TB  <br />- Fit hard drives: 2.5'' / 12.7mm SATA HDD / SSD  <br />- Item Dimensions: 5.1''x0.37''x5''(130x9.5x127mm)  <br />- Item Weight: 2.6 ounces  <br />- Capacity: 12.7mm<br /><br />How to use: <br />- Unpack the New drive｣ｬ lift the adapter retaining latch｣ｬ the screw to the hard disk｣ｬ insert the drive into the Adapter at an angle. <br />- Slide the drive into the connector until it locks into place｣ｬ lower the adapter retaining latch until it snaps closed. <br /><br />Function<br />- The height of this adapter is 12.7 mm｣ｬ this device accept 2.5 inch/ 12.7 mm SATA HDD｣ｬ Can expand your system and storage capacity with an additional hard drive｣ｬ bring you new maximum data storage flexibility｣ｬ with the compact portable design.<br /><br />Universal Compatibility<br />- Products for the 2.5-inch SATA interface and a thickness of 12.7mm｣ｬ as long as your computer is to meet our requirements｣ｬ regardless of any brand of computer can be used.<br /><br />Support<br />- 12.7mm SATA HDD / SSD hard drive disk｣ｬ SATA III / SATA II / SATA I｣ｬ maximum Speed Up to 6Gps; support hot swapping.<br /><br />Plug and Play<br />- Fast & Reliable connection just as the primary HDD. Fully integrated into Laptop｣ｬ no cables / PSU / software driver needed. Dual boot｣ｬ Support installation of 2nd Operating System on the 2nd HDD and boot selection.<br /><br />Notes: <br />- If your 1st hard drive is an SSD｣ｬ you could add an HDD/SSD for bigger storage space. <br />- If your 1st hard drive is an HDD｣ｬ you could buy an SSD replace the HDD｣ｬ then install the HDD in CD-ROM hard drive caddy｣ｬ so you would get an SSD+HDD assembly｣ｬ reinstall the system on SSD to improved your Macbook be super speed. <br />- Please check the below cool item｣ｬ that will turn your original 12.7mm SATA connection drive into an external DVD drive｣ｬ better yet｣ｬ no AC adapter needed; External case for 12.7mm SATA DVD drive. Only a case｣ｬ not included any drive.