Specification:Name:Round Card USBCapacity:256MB~64GBTransfer Rate:Hi-Speed USB 2.0 Certified,Website:http://www.js-coverluck.com,Compatible USB 1.1Compatibility:PC or Mac with a USB interfaceOperating System:Windows 7/Vista/XP/2000/ME/98 and Mac OS 8.6 and aboveDrivers:Required only for Windows 98/95 (Download Available)Power:No external power requiredData Retention:Minimum 10 YearsFunctions:Plug it into any USB port, it looks and functions just like another hard driveInterface TypeUSB 2.0Warranty:2 yearsCertification:CE/ROHS/FCCColor:Colorful printingInner Package;OPP bagOuter Package:Blister package,customized package,retail package,gift box package OR as your requirementsCustomization service:Customized logo printingPreloading undeleted or deleted data into usb flash driveMaking auto-run file into usb flash driveMaking encryption to protect your dataMaking jump-out website or advertizement when you plug the usb drive into PCWelcome any customzed usb flash drive orderFree artwork service