The Silentium 920B and 920W (B for black and W for white), is minimalistic in design with a sleek appearance on the outside. It has 2 USB ports, a 3.0 & 2.0 as well as microphone & headphone jacks. On the inside it is equipped with sound dampening system to make it whisper quiet. This mid-tower case supports micro ATX and ATX motherboards. AZZA makes all of its gaming cases out of Tamahagane. Tamahagane is the original steel used by Japanese sword smiths. Tamahagane takes 5 days to make. One day to build the walls (clay and sand), 3 day?s to smelt and 1 day to remove the iron out of the tatara. In this 5 days process, they need about 13 tons of charcoal and 8 tons of satetsu (black sand) to produce 2 tons of iron and steel. "
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