I got this cable in the mail today. I don't recall ever buying it, have no idea why it was sent....and I have no idea what it is.

Here are some pics. The item is very small and flimsy and seemingly no metal at all. The clear plastic caps come off as shown. No markings at all except "2" and "4" on the connector ends. I don't even recognize the company that sent it. Bizarre....but I am curious now. The connectors look somewhat shaped like USB Type B as far as the housing shape.....but are all plastic. Any idea what this is?