anonymous the flash drive version is available if you got windows 7 or windows 8 you can go to Microsoft website then find download windows 10 before you can click on upgrade make sure it says download windows 10 home or pro x32 and x64 once you make selection go ahead and select download to USB Flash drive once is download and its going to convert to usb iso drive then you can go ahead and install but I have not seen a usb flash windows 10 to sell only can be done manually