untill now all work good. i work with my disk on key and it's work fast without windows say that the device is capable for faster performance if it's connected to Hi-Speed usb (usb2).. now it's happen.. the Disk on key work in in low speed.. i tried to reninstall usb drivers, try to check bios settings and also check at google - nothing helps (BTW i found microsofr hotfix to something similar - but i don't have 4GB ram so - don't say to try it) thanks?