HP compatability

[Graham Johnson]

Hi,

I have a friend with an IBM compatible running XP. He has an HP 4280 USB
printer connected to it. When he plugs in a USB flashdrive it appears under
My Computer as drive E: and can be accessed OK without the printer turned
on.

When the printer is turned on Drive E: still appears and Drive F: is shown
as well, (I do not have a clue to what it refers) but the flashdrive can't
be accessed. It comes up with unrecognised device error. Turning the
printer off makes everything work as it should.

I have tried deleting and reinstalling the printer under Control Panel but
the problem is still there.

Any help would be appreciated.

Different USB ports have been tried with no success.

TIA,
Graham.