Features: 1.Using ultra?stable technology, in line with the USB2.0 standard, supports hot swap, plug and play. 2.Using USB interface and connects to computer through USB interface without additional power supply. 3.No mechanical parts, the electronic storage medium is anti-vibration and moisture-proof, anti-electromagnetic interference. 4.There are 5 storage capacities available: 4GB, 16GB, 32GB, 64GB, 128GB. 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: Maximum Write Speed: 4-10mb/s Maximum Reading Speed: 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 Packing List: 1 x U Disk PackageList:1 x U Disk