Features: 1.Ultra?stable technology, in line with the USB2.0 standard, supports hot swap, plug and play. 2.Adopt USB interface, connect to the computer through the USB interface, without additional power supply. 3.The electronic storage medium has no mechanical parts, is anti-vibration and moisture-proof, and anti-electromagnetic interference. 4.The maximum writing speed is 4-10mb/s, and the maximum reading speed is 10-20mb/s, which can be used to backup files, videos, etc. 5.There are two s of 64GB and 128GB to choose from, you can choose the capacity you need. specification:Item Type: U Disk No driver required (for Windows 98 and above), support for Windows 98/Me/2000/XP/OS X 9.x/OS X/Linux2.4.x; Interface: USB2.0 Computer: For IBM PC/OS XPC or laptop, etc.; Speed: Maximum Write Speed: 4-10mb/s Maximum Reading Speed: 10-20mb/s Application: Backup files, videos, etc. How to Use: Plug and Play The displayed capacity is different from the nominal capacity because the calculation method is different Manufacturer Standard: 1GB / 1000MB / 1MB = 1000KB Regarding Usable Capacity: Please Note The Memorandum Regarding Storage Product Capacity: 4GB = about 3.4GB-3.8GB 8GB=approximately 7.4GB-7.6GB 16GB=approximately 14.5GB-15.5GB 32GB=about 28GB-30GB 64GB=approximately 58GB-60GB 128GB=approximately 119GB-124GB 256GB=approximately 249GB-250GB 512GB=approximately 498GB-500GB PackageList:1 x U Disk