1、Aluminum alloy usb0U disk: Smooth texture, with a hole, can be carried by rope, very convenient. 2、USB connection: Support hot swap, no external power supply required. 3、Convenient data storage device: Easy to bring data home, office, school or anywhere else. 4、High capacity: No need to delete your valuable data, easy to read and store at high speed. 5、Support multiple devices, plug and play: Support TV, desktop, notebook, router and many other devices. Features: Aluminum alloy usb 2.0U disk: Smooth texture, with a hole, can be carried by rope, very convenient. USB connection: Support hot swap, no external power supply required. Convenient data storage device: Easy to bring data home, office, school or anywhere else. High capacity: No need to delete your valuable data, easy to read and store at high speed. Support multiple devices, plug and play: Support TV, desktop, notebook, router and many other devices. Specification: Material: aluminium alloy Interface: USB 2.0 Read and write speed: 12MB/s Working temperature: 0°C-60°C Storage temperature: -25 ° C ~ 85 ° C System Requirements: for Windows Vista, for Windows 7/10, for Mac Os and above Product size: approx. 4.1* 1.6* 0.6 cm / 1.6* 0.6* 0.2 inch   Package List: 1 * USB flash disk Note: 1. When U disk is connected to the computer, it is best not to directly operate the file in the U disk, please copy it to the computer and then operate it. 2. After the U disk is used, please do not connect it to the computer for a long time. After using it, you should unplug it. 3. After the U disk is used, please delete the hardware at the bottom right of the computer and then pull the U disk, otherwise it will easily cause file loss. 4. Data loss may be caused by the following aspects: sudden power failure, unstable power supply, abnormal plugging, accidental deletion, incorrect formatting, virus damage, electrostatic breakdown, encryption and permissions, firmware upgrade, electromagnetic interference, etc.