1. Before using this product, you must make sure that your hard disk is not encrypted, otherwise it will not be recognized when the hard disk box is connected to the computer! 2. If the previous of your hard disk is OS, use the hard disk box to connect to the computer of the system, and open "My Computer", the disk partition can not be seen. Please enter the disk manager to re-partition and format. Can be used normally! 3. When using a mobile hard disk box, please do not connect the front USB interface of the desktop, nor the USB interface on the motherboard close to the keyboard or mouse interface, because it is used for low-power devices such as USB flash drives, keyboards, and mice. Meet your mobile hard drive's electricity requirements. 4. If the nominal current of your hard disk is or equal to 1.7A (you can on the label of the hard disk), we recommend that you use a HUB with an external power supply to use the mobile hard disk, because the maximum power supply capacity of the USB 3.0 interface is 1A. The high current demand of the hard disk, the high power consumption, and the USB interface cannot meet the power requirements, it will cause the mobile hard disk to be unable to recognize, or to recognize and cannot read and write data, or the mobile hard disk to disconnect from the computer. This hard drive box is only applicable to the hard drives removed from 's 2010 and 's 2011 AIR or . It is to other years. 's hard drive interface is different every year. In 2010, the interface is 6+12pin. You can also count the number of pins of the hard drive. 5. If the mobile hard disk cannot be recognized when connected to USB 3.0 or can be recognized but does not work normally, you can try to connect to the USB 2.0 interface to reduce speed and power consumption, but this is not a . Some can be used to reduce power consumption. The reduced power consumption can not be used. 6. Do not move the mobile hard disk box randomly during use, otherwise it will cause data damage or loss of your hard disk firmware, and the hard disk will be completely scrapped! When the mobile hard disk is not in use, please remove the data cable from the mobile hard disk box, otherwise it is easy to cause damage to the USB interface. size:12.2x4x1cm Material:Aluminum alloy colour:Silver Package Contents: 1 x hard disk box for Air A1370 2010 2011 1 x screwdriver 1 x data cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.