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I have an LED sign that connects via a RJ11 connection. I have a USB adapter that goes from USB to RJ11, however when I pull up the software there is no connection to the sign becuase it is looking for a com port. Any one know how to setup a virtual com 1 or 2 port on windows 7 x64?

Here is a pictures of the actual adapter:

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Is the adapter just a plug adaptor (just a cable with connectors on each end) or a USB to serial adaptor (that has a box containing circuitry)? – Dennis Williamson Sep 14 '10 at 5:12
Hopefully that helps a litte. – KronoS Sep 14 '10 at 5:23
up vote 1 down vote accepted

You need an actual USB to RS-232 adapter and an RJ11 to DB9 adapter and a standard USB A-B cable and a standard gray phone cable (four conductor).

alt textalt text

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Dang I was scared that may be the answer. What's the difference though between this setup and my adapter above? – KronoS Sep 14 '10 at 5:56
@KronoS: The adapter you show has no electronics to convert the signal between USB and RS-232. – Dennis Williamson Sep 14 '10 at 7:12

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