... 1.1, Hot plug & play3.Support Win98/98SE/ME/2000/XP/Vista/MAC OS/LINUX automatic4.Capacity: 128mb, 256mb,512MB,1GB ... and notebook PC or Mac with USB portOperating SystemRequired above Windows 98/95InterfaceUSB 2.0 , compatible with USB 1. ... Operating SystemFile TransferSecureTravelerWindows Vista® (SP1)4YesYesWindows ReadyBoostYesNoWindows XP (SP1, SP2, SP3)YesYesWindows 2000 (SP4)YesYesMac OS X v.10.3. ...