With the RM4 and the U4, we offer two outstanding models, both of which are rounding up their respective case series. Both ATX-Tower convince by the combination of high-quality materials and the outstanding processing. In addition, we are expanding our fan range with two sets of 3 RGB fans with RGB-controllers, the FR-131 and the FR-531. Final, we offer a stylish aluminum and tempered glass monitor stand with white LED lighting, the GA-01.

The RM4 is part of the RM case series, created for maximum variability for the installation of hardware. The optimally designed midi-tower can be equipped with ATX, Micro-ATX or Mini-ITX motherboards and convinces with its smartly designed interior. Particular attention has been paid to allow the installation of high-end hardware with powerful air- or water cooling.

The stylish case combines a particularly stable chassis made of SECC steel with an attractive exterior made from anodized aluminum. The front left side wall is made of 5 mm thick tempered glass. This allows the illuminated Jonbo-logo to shine through and offer an eye catcher.

The inner space of the case has been divided in two, where the PSU and the HDD-cage are mounted in a separate space below the motherboard underneath a special cover. Three 2.5 inch SSD or fans/radiators up to 360 mm can be mounted on top of this cover. It also allows a very clean installation of the system.

The black coated interior offers space for VGA-cards of up to 380 mm in length and CPU air-coolers with a maximum height of 170 mm. If users prefer water cooling, they can use install a 240/280 mm radiator behind the front – without any problems in push / pull mode – or a 120/240/360 mm radiator on top of the PSU cover.

Three fans are already pre-installed in the RM4. Two 120 mm are located in the fan-holder behind the front, where the fans suck in fresh air via the air holes on the left side of the front. The fans can be exchanged for 140 mm fans, if desired. Another 120 mm fan is located at the rear of the case. Finally, three additional 120 mm fans can be mounted on top of the PSU cover.

The U4 is from the popular U-series, which has always been one of our bestsellers because of its compact dimensions and the particularly attractive price-performance ratio. The goal here was to offer a very compact and economical ATX case, made of aluminum.

The especially discreet look of the U4 is aimed especially at users who are looking for a compact ATX tower for their desk or living room. The black anodized front is deliberately simple, the I/O panel is unobtrusively located on the left side of the front panel. A 5 mm thick side part of tinted “tempered glass” rounds off the noble impression of the U4.

The interior of the U4 is compact and comes without additional gimmicks in favor of a particularly attractive price. In the U4, ATX, Micro-ATX or Mini-ITX motherboards can be installed. A 120 mm fan is pre-installed on the rear panel. Two 2.5 inch drives and two 120 mm fans can be attached to the removable fan holder behind the front of the case. On the bottom users can optionally install a 2.5 or 3.5 inch SSD/HDD or another 120 mm fan. Final, a 3.5-inch HDD can be installed in the HDD holder attached to the side of the power supply.

The FR-131 and FR-531 sets of three extend our fan portfolio. Both sets consist of three 120 mm RGB fans each, an RGB controller and a slot panel that allows the user to control the speed and color modes of the fans without having to open the case every time. The fans offer color shifts with 256 colors, nine different individual color modes, as well as a color change between these 9 colors. If desired, the lighting can also be deactivated completely. In addition, the controller offers the possibility to adjust the speed of the fans. This allows the fan speed to be reduced or turned off.

The FR-131 is based on the FR-101 fans and offers 18 high-light LEDs in the fan frame, which in combination with the black fan blades allow impressive color effects. The FR-531 is equipped with transparent fan blades, 10 particularly bright RGB LEDs are mounted around the fan motor. The special design of the fan blades gives the fans a unique look with spectacular light effects.

The GA-01 monitor stand combines aluminum and “tempered glass” for a particularly impressive design. The integrated white LED illumination underlines the high-quality optics. On the front right side a USB hub with two USB 3.0 ports for USB sticks or corresponding devices is located. Especially useful is the possibility to push a keyboard under the monitor stand, if the desk is to be used elsewhere. 475 x 57 mm space is available for this purpose.

All products are now available in stores. The GA-01 is available exclusively at our distributor PC-Cooling for now. The MSRP of each model can be found in the specifications below.


Specifications RM4

• Case type: Midi-Tower
• Form factor motherboard: ATX, M-ATX, Mini-ITX
• Form factor PSU: ATX PS2 (bottom)
• 2.5 inch internal: max. 5 x
• 3.5 inch internal: max. 2 x
• Case fan (front): max. 2 x 120/140 mm (2 x 120 mm installed)
• Case fan (bottom): max. 3 x 120 mm (optional)
• Case fan (rear): 1 x 120 installed
• Height: 478 mm
• Width: 215 mm
• Depth: 445 mm
• Weight: 9.5 kg
• Material: Aluminium, tempered glass, steel
• Max. height CPU coolers: 170 mm
• Max. length VGA cards: 380 mm
• Max. radiator height: 240/280 mm (Front), 120/240/360 mm (Boden), 120 mm (Rückseite)
• Max. radiator thickness: 35 mm without fans (bottom, if the lowest PCI slot is being used)
• Code RM4 Black: 4250140355102
• Manufacturer-Number RM4 Black: RM4 B
• Article-Number RM4 Black: 600045510
• MSRP RM4 Black: 159.99 € incl. 19% VAT

• Code RM4 Silver: 4250140355157
• Manufacturer-Number RM4 Silver: RM4 B
• Article-Number RM4 Silver: 600045515
• MSRP RM4 Silver: 159.99 € incl. 19% VAT

Product pictures can be downloaded here: RM4 Black – RM4 Silver


Specifications U4
• Case type: Compact Midi-Tower
• Form factor Motherboard: ATX, M-ATX, Mini-ITX
• Form factor PSU: ATX PS2 (bottom)
• 2.5 inch internal: max. 3 x
• 3.5 inch internal: max. 2 x
• Case fan (rear): 1 x 120 mm
• Case fan (bottom): opt. 1 x 120 mm
• Case fan (front): opt. 2 x 120 mm
• Height: 428 mm
• Width: 205 mm
• Depth: 340 mm
• Weight: 4.8 kg
• Material: Aluminium, steel, tempered glass
• Maximum height CPU coolers: 170 mm
• Maximum length VGA cards: 310 mm

• Code U4 Black: 4250140346513
• Manufacturer-Number U4 Black: JB U4 B
• Article-Number U4 Black: 600046510
• MSRP U4 Black: 84.99 € incl. 19% VAT

• Code U4 Silver: 4250140346513
• Manufacturer-Number U4 Silver: JB U4 B
• Article-Number U4 Silver: 600046510
• MSRP U4 Silver: 84.99 € incl. 19% VAT

Product pictures can be downloaded here: U4 Black – U4 Silver


Specifications FR-131 RGB

• Type: RGB case fan
• Height: 120 mm
• Width: 120 mm
• Depth: 25 mm
• Voltage: 12 Volt
• Fan speed: 1,000 – 1,500 rpm
• Rated Power: 3.6 W
• Airflow: 45.4 – 68.3 m³/h
• Noise: 18.0 – 25.6 dBA
• Bearing: Hydraulic Bearing
• Connector: RGB-Controller (S-ATA Power)

• Code: 4250140344076
• Manufacturer-number: FR131 RGB
• Article-number: 200400407
• MSRP: 49.99€ incl. 19% VAT


Specifications FR-531 RGB

• Type: RGB case fan
• Height: 120 mm
• Weight: 120 mm
• Depth: 25 mm
• Voltage: 12 Volt
• Fan Speed: 900 – 1,300 rpm
• Rated Power: 3.0 W
• Airflow: 50.0 – 72.4 m³/h
• Noise: 18.0 – 25.6 dBA
• Bearing: Hydraulic Bearing
• Connector: RGB-Controller (S-ATA Power)

• Code: 4250140344083
• Manufacturer-number: FR531 RGB
• Article-number: 200400408
• MSRP: 34.99€ incl. 19% VAT


Specifications GA-01

• Model: GA-01 Monitor Stand
• Material: Aluminium, tempered glass
• Dimension: 530 x 210 x 60 mm (L x B x H)
• Connectors: 2 x USB 3.0
• Max. weight capacity: 50 kg
• Weight: 2.7 kg

• Code: 4250140361004
• Manufacturer-Number: JB GA-01
• Article-Number: 600600100
• MSRP: 39.99€ incl. 19% VAT