Features: 1.Ultra?stable technology, in line with USB2.0 standard, supports hot?swappable, plug?and?play. 2.Adopt USB interface, connect with computer through USB interface, no additional power supply is needed. 3.Electronic storage medium, no mechanical parts, anti-vibration, moisture-proof and anti-electromagnetic interference. 4.There are 16GB, 32GB, 64GB, 128GB 4 s, you can choose which you like. 5.Small size, easy to carry and store, convenient to use and with good performance. specification:Item Type: U Disk No driver required (for Windows98 or 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 X PC or laptop, etc. Speed: The maximum writing speed is 4-10mb/s, the maximum reading speed is 10-20mb/s Application: Backup files, videos, etc. Operation Steps: 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 =approximately 3.4GB-3.8GB 8GB=approximately 7.4GB-7.6GB 16GB=approximately 14.5GB-15.5GB 32GB=approximately 28GB-30GB 64GB=approximately 58GB-60GB 128GB=approximately 119GB-124GB 256GB=approximately 249GB-250GB 512GB=approximately 498GB-500GB Package List: 1 x U Disk PackageList:1 x U Disk