Features: 1.Using A+ grade high-speed chips, through multiple rigorous tests, fully guarantee the use capacity and storage stability of the U disk. 2.The size and thickness of the bank card is only 2MM and the same size as the bank card, which is convenient to carry and not easy to lose. 3.Ultra?stable technology, in line with the USB2.0 standard, supports hot swap, plug and play. 4.The product has been tested, even if it is dropped into water or taken out in rain, wipe it dry and it can be used normally. 5.No driver required (for Windows98 or above), support for Windows 98/Me/2000/XP/OS X 9.x/OS X /Linux2.4.x. specification:Item Type: Card U Disk Interface: USB2.0 Computer: For IBM PC/OS XPC or laptop, etc.; Speed: Maximum Write Speed: 6mb/s Maximum Reading Speed: 15mb/s Application: Backup files, videos, etc. No driver required (for Windows 98 and above), support for Windows 98/Me/2000/XP/OS X 9.x/OS X/Linux2.4.x; 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