The Supersonic Xpress USB 3.0 flash drive brings the speed and performance of USB 3.0 at an affordable price Featuring a stylish cap less design that hides the USB 3.0 connector when not in use, the Supersonic Xpress works like a pen to reveal the USB connector. Transfer data in a flash with speeds up to 60MBs read and 25MBs write when connected to a USB 3.0 port. No USB 3.0 port The Supersonic Xpress is backwards compatible to USB 2.01.1 and comes with a 2 year limited warranty.