FSP M540-BA is a black ATX Mid Tower case for building a desktop PC. Its two glass panels show the installed components, and the frame uses 0.8 mm SPCC steel. The case measures 451 × 258 × 491 mm.
It supports ATX (BTF), M-ATX and Mini-ITX motherboards, with space for a graphics card up to 420 mm long and a CPU cooler up to 180 mm high. Four 120 mm ARGB fans come pre-installed: three reverse fans on the side and one at the rear. Support for a radiator up to 360 mm gives another option for a compatible cooling setup.
For storage, there is room for up to 5 SSDs or 3 HDDs, though some drive positions are shared. Front I/O includes two USB 3.0 ports and one USB Type-C port for connecting peripherals. The power supply bay accepts an ATX unit up to 250 mm long.