The Cooler Master HAF XB Mid Tower has a the ATX form factor. ATX is the most ubiquitous of case standards, providing the largest array of compatible hardware on the market. Using the ATX standard, the case can house motherboards and power supplies with form factors ATX, Micro-ATX and Mini-ITX. The dimensions of the case itself (LxWxH) are 423mm x 442mm x 330mm.

The Cooler Master HAF XB Mid Tower has seven expansion slots, so there is plenty of room for extra components, which may be a deciding factor when planning on the longevity and build type of a PC system. The case has two 5.25" drive bays, which There are no 5.25" drive bays, but there are two 3.5" drive bays, which is quite a small amount of space, although you can install an SSD or laptop hard drive in one of the six 2.5" drive bays.

Made primarily of Steel, the Cooler Master HAF XB Mid Tower is built to be strong and well-ventilated. Steel cases are generally fairly cheap and sturdy, but also tend to be quite heavy. Whatever your case's material, it is important to keep a consistent airflow so that heat doesn't build up inside. It is therefore advised that you make use of the available built-in case fans and fan installation sections.