On the outside, the U4 Pro from Jonsbo impresses with its discreet and clear design, the stylish side panel with mesh and the flawless workmanship. The midi tower features a power switch, a USB-C 3.1 and a USB 3.0 port as well as a combined audio socket on the right-hand side. The midi tower offers plenty of space for powerful hardware and skilfully showcases it.

With its dimensions of 205 x 426 x 395 millimetres, the U4 Pro from Jonsbo is still quite compact, but it can accommodate full-blown gaming hardware inside. In addition to a Mini-ITX, Micro-ATX and ATX mainboard, there is also space for graphics cards up to 330 millimetres in length. With seven slots, there is enough space for expansion cards such as capture cards or sound cards.

The U4 Pro can accommodate up to two 2.5-inch and one 3.5-inch data carriers. Two 120 mm fans can be mounted at the bottom and one 120 mm fan in the rear panel for cooling. Two additional 120 mm fans can be fitted in the lid of the elegant case and reinforce the natural chimney effect, which benefits the cooling of all components and is supported by the mesh on the left-hand side panel. The power supply unit is housed in the front of the case and can be up to 190 mm long. For CPU coolers, 160 mm is enough space for common models.