... -PMS color 3-Prompt delivery 4-CE/FCC Best Seller USB Flash With LED IndicatorSpecification Capacity 128MB, 256MB, 512MB, 1GB, 2GB ... , it looks and functions just like another hard drive Power USB powered, no external power needed Driver Required only for Windows ... resistance 1,000 G Data retention 10 year minimum Power USB powered, no external power needed Operating temperature -10~ +55 °c ...