The Cooler Master Silencio is supplied in a simple box with polystyrene panels for protection. Inside is a user manual to help when building the system. There are also screws, a PC speaker, cable tidies and 12 rails for drive installation.
The Silencio 550 is formed around a steel frame and is completely black. The front of the chassis is home to a high glossy style door to improve the appearance. Behind it is a foam insert to help with noise dampening. The door opens to expose three 5.25 inch drive bays and the bottom one is ready to support a 3.5 inch drive with the supplied X-Dock. It is a substantial case, weighing 9.2 kg.
The front of the case has a dust filter, which is easy to remove for cleaning. There is a single 120mm fan here which is a silent Cooler Master design, with a rotational speed of only 800 rpm. There is space here to add another if you need to improve the cooling prowess.
Along the top of the case are a single USB 2.0 port, a single USB 3.0 port, an SD card reader slot and 3.5mm audio ports. At the far right are the main reset and power buttons. There is no fan at the top of this case.
Along the bottom of the case are four rubber feet for stability and a dust filtered PSU zone at the back.
The rear of the case is neatly laid out. There is a silent 120mm fan at the rear, positioned as an exhaust fan.
Each side panel is held in place with two thumbscrews. Underneath are seven expansion slot slots, and two rubber mounted holes for watercooling kits.