4GB Syringe USB Flash Drive for Funny Doctors Storage Capacity: 8GB Hi-Speed USB 2.0 and compatible with USB1.1 OS Support: Windows 98/98SE, Me/2000/XP, VISTA, 7; Mac: OS 9.0/ 10.0 or later; Linux: kernel 2.4 or later Data Retention: Over 10 years Great collection for funny doctors or medical/nursing students