It can get confusing.

  spuds 12:58 05 Oct 2003

Recently I added some further devices to my computer via the USB connections.Some devices gave problems [scanners] others did not.Checking with the various manufacturers, it came to light that in some cases,the computer USB was not producing sufficient power.The end result, which seemed to have corrected the problem, was to install a self powered 4 port hub, and connect the 'problem' devices through that.Other devices [printers] that worked okay previously, where still connected via the direct computer USB sockets.The printers would not work correctly via the self powered USB hub, when test trialed.

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