techpowerup_editorchoise techarena_it_gold gamezoom_silber xtremesystems_great elektroniktest_silver comptoir_4stars pcfoster_rekomendacja_8051f651df2a7bc awardfabrik_gold_80x80 planet3dnow_logo_test51f651e1650b4 ocaholic_antiphon

Under the label „Jonsbo - powered by Cooltek“ we present high quality cases for demanding users.

The "U3" is the largest model in the attractive U series for home PC systems. The main feature of this case series is the timeless design line with the elegantly rounded corners and a very appealing exterior. This version offers a transparent window in the left side panel; a special optical highlight for all hardware enthusiasts who enjoy the view at the inner workings of their case.

This refined and at the same time unobtrusive design of the case ensures that it can blend in with any interior style. The blue illuminated power button is recessed into the sleek front, as well as the I/O panel with 2x USB 3.0 and the HD audio connectors. The "U3" is made of 2.0 mm thick anodized aluminium and available in black and silver.

Based on our experience and after careful study of current customer requirements, the focus was to develop a case series to implement the original M-ATX/Mini-ITX - thought. For this reason, we decided not to implement assembly areas for optical drives and long video cards. VGA cards up to a length of 260 mm length and CPU coolers up to a height of 175 mm are supported – which allows the installation very powerful configurations with sufficient space for most popular configurations.

The high-quality and well-manufactures Micr-ATX case supports motherboards up to a maximum size of 245 x 245 mm. The installation of the motherboard is very simple - after you remove the left side panel it can be installed with little effort on the right side panel. ATX power supplies can be installed in the "U3", a total of four PCI expansion slots are available.

In order to guarantee a particularly smooth-running system, the hard disk drives are anti-vibration mounted at the bottom of the “U3". You can either install 2 x 2.5 inch or 1 x 3.5 inch HDD / SSD. An additional 3.5 inch HDD can be accommodated in side-mounted HDD rack.

For effective ventilation the “U3” comes with a quiet 120 mm fan preinstalled at the rear panel. The speed of the fan can be adjusted via an external, multi-stage switch individually to your own liking.

The "U3" is aimed at users who are looking for a very stylish PC for typical living room applications. Through its intelligent design, CPU cooler with a maximum height of 175 mm can be installed. In combination with space for up to four expansion cards and high-performance graphics cards  you can thus install a compact and at the same potent PC-system in the "U3".

The stylish case rests on vibration-decoupled case feet in the appealing looks of high-quality Hifi components.

Two USB 3.0 “Super Speed” connectors are available externally. Thus, external hard disk or USB drives can be connected quickly and easily.

Depicted hardware is not included.


Available downloads:

Download Manual U3


Case Type HTPC / M-ATX
Form Factor Motherboard Micro-ATX, Mini-ITX
Form Factor PSU ATX
3.5 inch drive bay internal 2 x (optional)
2,5" inch drive bay internal 2 x (optional)
Case fan (rear) 1 x 120 mm
Height x Width x Depth 371 x 208 x 270 mm
Weight 3.1 kg
Material 2,0 / 1,5 mm aluminium
Maximum height of CPU coolers 175 mm
Maximum length of VGA cards 260 mm
Code 4250140364708
Manufacturer number JB U3 K

Color selection