Getting inside of the P190 is very simple. Just remove 2 thumbscrews on the side and take the panel off. Antec has gone with black thumbscrews to complement the black design of the case. Before we jump into the case let's check out the huge fan on the side of the case. The huge fan is 200mm and features the speed control like all the other fans. You can connect it to your power supply via a molex connector. It also features an air filter to keep dust out.
The interior of the P190 is just like the 182. Antec uses their very effective dual-chamber design. With this design the power supplies are in a separate chamber from the motherboard and other components. This isolates the heat produced from the power supplies and cuts down on system noise. You can see small rubber strips along the top of the chamber. This is what traps in the noise and vibration.
Inside of the case we found a treat, a flexible snake light! I don't know how many times when working on computers I wish I had a little more light so I could see things more clearly. The snake light can be powered by USB or molex connection. Also inside of the case we find 2 power cables (one for each power supply), drive rails, wire ties, middle fan wire bracket, extra screws, and a PCI-E card holder.
There is more than enough room inside of the case. You can fit all motherboard sizes up to Extended ATX (12" X 13"), so you have no need to worry about things fitting inside. There are 2 removable hard drive cages. The one at the top holds 2 hard drives and the other hold 4 hard drives vertically. Each of the drive cages are held in place by thumbscrews so they are easy to remove.
Also to make plugging in modular cables to your power supply easier and organizing the power supply cables Antec has added a removable door on top of the power supplies. It is easily removed by taking out 2 thumbscrews.