Crystal Frog Shape 32GB USB Flash Drive Keychain U Disk 32GB crystal frog shape USB flash drive with keychain Interface: USB 2.0 Operating Systems: Windows ista / XP / 2000 / ME / 98 / 95 and Mac OS 8.6 and above. Available Capacity: 1GB, 2GB, 4GB, 8GB,16GB, 32GB Plug-and-play, no external power supply required