Usb 30 stick memory size 64 gb read speed 140 mbs write speed 20 mbs encryption 256 bit aes backward compatible with usb 20 memory type flash memory material aluminum special features bootable splash proof certificatessafety fcc manufacturers warranty 2 years additional information read and write speed may vary depending on the capacity compatible operating systems windows 7 windows 8 windows 8 mac os 10 mac os 10 windows vista colour silver