10 packs of 64GB USB flash drives, thumb drives, rotating memory sticks Storage memory: 64GB Interface: High speed USB 2.0 Working temperature: -30~70 ℃ Supports Windows 7/8/10/Vista/XP/Unix/2000/ME/NT Linux and Mac OS, compatible with USB 2.0 and 1.1 ports Easy to read and high-speed, no need for driver/power supply, plug and use as needed. Can be an impressive gift for your loved ones, friends, and even customers. Note: Due to different capacity calculation methods, the actual available capacity of USB flash drives may be less than the labeled capacity.