Each hub can service one or two USB ports. If it shows more than 500mA then this could explain a problem. If you type devmgmt.msc into the Start/Run window and press OK you can go to each of the USB Root hubs under the "Universal Serial Bus Controllers" heading and look at the power that each hub is using. Yes, trying a powered hub is a good idea but try another USB port first. ![]() ![]() If something happens and the adapter is suddenly disconnected then it can corrupt the drivers which will explain the software re-installation requirement and why Windows now sees it as a mass storage device.Īre you able to try this adapter in another computer to see if it's the problem? When you plug the adapter in, Windows loads the USB drivers. Wow, you've got yourself an interesting problem.Įach USB port has a maximum current that it can handle (500mA per port) but if everything was working fine until you introduced this USB Wireless adapter (I'm not going to call it a modem so as to avoid confusion on my part) then it seems to point the finger here.
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