Unless it's under construction, I've never seen a business conference room with openly exposed cables (don't know about government rooms). Cables are always hidden underneath, or behind a panel. They are exposed as jacks or sockets, which are usually recessed. Plus, the photo shows entire cables lying on top of the table, some short, some long. The short orange one in the foreground matches the orange ones in table trough. Sure, it could have come out of someone's laptop bag. But the same color? Like me, I'm pretty sure that most people haven't felt the need to carry a connector cable in their bag for over a decade.