I just purchased a house that was pre wired for a projector. The existing wires for the projector did not have an HDMI but did have an 18 pin dvi cable. Bad news is that my projector does not have a dvi input. To avoid a very difficult and costly rewire for a HDMI can I use this adapter to convert the dvi to HDMI? Is there any downside to this that anyone can think of?