As you realize, your video needs a lot of work. You need to focus more on the product less on you or your company. We don't see any actual footage of the cable being plugged in, just some rather plain mockups of how it could work. You have a working prototype, show it! Better lighting, better editing and better sound also help give your product more credibility.

This is a good first draft, you just have to go through a couple more iterations.