The Bunker is a simple 5.25-inch bay device. The device only comes in black, but hey most gaming cases are black. On the front you have a door with a honeycomb design on it and lock. This is a 20 key lock system so it does not use the ordinary key that many people already have.
If we take a look at the USB ports you have 4 of them. They are all USB 2.0 and are all on the same PCB with the single connection that will go to your motherboard.
The entire Bunker device is made of plastic, which is a little concern to me. On the side you will find your mounting holes. If you open the front door the 4 port USB hub will come out for you to install your drives.