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In windows 2000/XP/Vista/Win7, please go to Device Manager \ Ports COM& LPT \right click on [ATEN USB to Serial Bridge],open [Properties] click on [Advanced]- in the lower left hand corner of the box click on the down arrow in the drop down list, select the COM Port you wish to use (usually 1,2,3,or4)then click OK - the operating system may warn that the COM Port is in use, but it isn't so use it anyway |