Product name: USB Flash Driver Product size/weight: 19*57mm/15g Memory capacity: 128MB/256MB/512MB/1GB/2GB USB Interface: USB1.1/USB2.0. Hot plug-and-play Computer system requirement: PC/AT or compatible desktop or notebook or Mac computer with USB port. Operating System: Windows98/SE. WindowsMe / 2000 / XP, Linux2.4. X, Mac OS9.1/Mac OS X, Linux 2.4. X which support USB mass storage protocol Operating Current: < 33mA Suspend Current: < 28mA Data Retention: Over 10 years Reading Speed: 12MB/S Writing Speed: 11MB/S Operating Temp.: -10C~+55C Storage Temp.: -20C~+55C Operating Relative Humidity: 20%~90% Storage Relative Humidity: 20%~93% No extra power supply required More than 100000 times of write/read cycle endurance Please wait 5-10 seconds between plugging in and unplugging.