Features: Fully compatible with USB2.0 standard Easy Plug and Play installation Capacity: 256MB / 512MB / 1GB / 2GB / 4GB / 8GB / 16GB No driver needed except for Windows 98SE No external power needed. Specification: Transfer Speed: Read 12 ~ 20 Mbyte/sec, Write 8 ~ 12 Mbyte/sec Speed may vary due to host hardware, software and flash built. Date Retention: Up to 10 years Weight: 35g Certificates: CE, ROHS System Requirement: Desktop or notebook computer with USB Port, installed with one of following OS: Microsoft Windows 2000 Microsoft Windows ME Microsoft Windows XP Microsoft Windows Vista MacR OS 9.0 or later