Inside The Viper 2
You can see how Viper 2 looks inside in Figure 5. This case comes already with a 400 W aluminum power supply. Since it is aluminum made, it helps a lot making the case lighter. It has seven screwless slots for expansion boards, meaning that you can install daughterboards without needing to use a screwdriver. You can also see on Figures 5 and 6 the back fan, which glows red when the system turns on.
In Figure 7, you can see the 120 mm front fan that comes with the case turned on (it also glows red when turned on). It helps cooling the hard disk drives installed in the internal 3 ½” bays.