The FSP CMT580B is a black PC case for building a desktop computer. Its chassis is made from 0.8 mm SPCC steel and measures 450 × 220 × 408 mm, with a weight of 7.9 kg.
It fits E-ATX, ATX, Micro ATX and Mini-ITX motherboards, with 7 expansion slots. There is room for a graphics card up to 335 mm long, a CPU cooler up to 160 mm tall and an ATX power supply up to 170 mm long. Storage bays accommodate 2 3.5-inch HDDs and 2 2.5-inch SSDs.
Four 120 mm fans come pre-installed: 3 at the bottom and 1 at the rear. Radiators up to 360 mm can be fitted at the top or bottom. Front connections include 2 USB 3.2 Gen 1 ports, USB 3.2 Gen 2 Type-C and combined HD audio, keeping common peripherals accessible at the front.