Features: 1.No need to drive, plug and play, compatible with most USB devices on the market, mobile phones/computers, etc., to avoid unrecognized at critical moments 2.Possess beauty and strength, the carefully crafted metal texture, and high-value appearance make people love it 3.Adopt A+ level full?capacity chip, bring faster and more stable transmission, safer data 4.Used with OTG adapter, which can expand mobile phone memory, convenient storage, direct reading and copying of files, photos, videos, etc. 5.Two?in?one designed as a multi?function smart phone U disk, possess simple and novel design, small size, exquisite details, aluminum alloy frosted technology, full texture, simple and convenient to use specification:Item Type: U Disk No driver required (for Windows98 and above) Applicable system 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. Maximum Writing 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 256GB=approximately 249GB-250GB 512GB=approximately 498GB-500GB PackageList:1 x U Disk