Features: Interface: Ultra speedy USB 3. 1 Gen 1 connector, fully compatible with USB3.1 and the following interfaces. Plug and Play: No software to configure. Ideal for transferring large files (such as PC backups) or streaming 4K video on a smart TV. System compatibility: Support Windows XP/7/8/10+, Mac OS X 10.5+,Linux 2.4.x+, Android 4.0+(device needs to support OTG function) READ SPEEDS: The USB has Read speeds of up to 400-450B/S. WRITE SPEEDS: The thinkplus TU203 USB 3.1 has write speeds of up to 300-250MB/s. Specification: Model: TU203 Storage Capacity: 128G/256G/512G/1TB (Optional) Interface: USB3.1 Gen 1 Material: Zinc Alloy Read Speed: 400-450B/S Maximum write speed: 300-250MB/s Support System: Windows XP/7/8/10+, Mac OS X 10.5+,Linux 2.4.x+, Android 4.0+(device needs to support OTG function) Product Size: 61.3x16.6x8.7mm Product Weight: 23g Packing List: 1 x Dual Port U Disk