Pny attache 4 usb20 64gb flash drive features amp benefits usb 20 and 11 compatible works with windows 7 windows 8 windows vista windows xp windows me windows 2000 mac os 86 and higher linux kernel 24 non compatible windows 98 size 53 8 x 19 5 x 9 5mm write speed up to 8mbs read speed up to 25mbs warranty 2 years reliability operating temperature 0degc to 60degc storage temperature 20degc to 85degc storage humidity 95 max non condensingn