Designed for mini-ITX type motherboards. These chassis comes in various shapes and sizes. The R6-bare chassis can be fitted with an 1U 220V AC power supply to power ATX type motherboards. It can also be fitted with a riser card to accept an extra PCIe type card inside the unit. The other chassis take 12V DC input and can power ATX motherboards via a PICO type power supply. In many cases a 12V DC input motherboard gets installed into these chassis and no separate power supply is needed.