Shenzhen-based PC peripherals maker Jonsbo unveiled a trio of mini-ITX aluminum cases, the U1, U2, and U3, pictured in that order. Available in black, red, and silver brushed-aluminum trims, the three are some of the few mini-ITX cases with a side-panel acrylic window. The U1 is the smallest of the lot, with just enough room for a thick mini-ITX motherboard with up to 90 mm-tall CPU coolers to squeeze in, you get room for two 60~80 mm rear exhaust fans, and a couple of 3.5/2.5-inch drives. The U2, on the other hand, gives you room for two expansion slot bays, taller CPU coolers, and a 120 mm rear exhaust fan, in addition to room for up to four drives. The U3 is the largest of the lot, with room for standard ATX PSUs, width comparable to ATX towers, a 120 mm rear exhaust and the ability to stack several more drives using a drive tray.