Those are mostly useless. These require port power, so you need 1A of 5v per port.
I guess those big connectors have an external power supply.
Now, if you could just get a ninja version with a built-in miner that works on port 80, I could just walk around my workplace and surreptitiously put one in each of the thousands of computers here. Distributed risk, minimal management. And no power costs

The first ASIC botnet ...