KAISLE 64GB USB Flash Drive, External USB Flash Memory Storage Thumb Drive, Portable Flashdrive with Keychain, 64 GB USB 2.0 Memory Stick exFAT Data Storage Jump Drives for Computers Capacity: 64GB Technical specification: flash drive Chip: Grade A flash memory chip Interface: USB 2.0 Operating temperatures: 32 º F to 140 º F (0 º C to 60 º C) Storage temperatures: - 4 º F to 185 º F (- 20 º C to 85 º C) Supported operating systems: Win98/ME/2000/XP/Vista/7/8/10/11, Mac OS 9. X and above, and Linux.