As every Windows XP user probably knows, this OS has an utterly stupid feature of installing a USB device anew if it was plugged into a different USB receptacle, unless the device has a unique serial number, which is, usually, only true for mass storage devices. I've read somewhere that it was introduced to permit using two identical devices without SNs simultaneously, but if the developers really wanted this, they should make the OS install another device only if the previously installed device(s) of this same type were connected. As it stands, the current implementation is nothing but annoyance for 99.(9) percent of users. I'm, therefore, very much interested if there's a way to get rid of this behavior. I don't care if I lose the ability to use two identical devices without SNs simultaneously. Why would I want to, anyway, it's not like I need a number of UMTS modems or IrDA adapters or anything else. I may need two identical external HDDs, but those will surely have SNs. Sorry if this question has already been asked, but it seems that the search engine on this forum ignores three letter words, at least I got nothing when I searched for "USB".