Omtech Fiber ... Waiting for Connection

Hi all. I have had an Omtech 50w Fiber for a couple of years and used w/o a problem until a couple of months ago. It started having trouble not connecting. In LB, it says waiting for connection. When I connect/disconnect, computer chimes. Still, I thought maybe bad USP cord so I got a new one and still did not see connection. Now there was one time a couple of weeks ago it happened to connect, but now it is back to not connecting.

Anything else I can try?

Thanks