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Great experience, everything delivered and working exactly as expected. (8th April 2019 via Trustpilot)
RM3 Zone Silver Window Micro-ATX Aluminium Case
(1 customer rating)
RM3 Zone Black Window Micro-ATX Aluminium Case
(1 customer rating)

Jonsbo RM3 Zone Micro-ATX Aluminium Cases

- Replaced by the Jonsbo RM3 Zone RGB Micro-ATX Aluminium Cases

The RM3 brushed aluminium finish shines with its superb quality. This gorgeous case features transparent windows, which are an optical highlight for all hardware enthusiasts who enjoy looking at the inner workings of their PC.

The Jonsbo RM3's internal structure is made of high quality 1.0 mm thick steel given the case maximum stability. Surrounding this is 2mm thick aluminium panels encloses the chassis, apart from the front panel which is 4mm thick. The side panels are manufactured from 5mm thick tempered glass to give it a unique look.


  1. Gorgeous full aluminium micro-ATX case
  2. 5mm tempered glass side panels
  3. Supplied with one 140 and two 120mm quiet fans
  4. All intake fans have dust filters

Despite the compact dimensions of the RM3, the intelligent interior design allows the installation of motherboards of up to 245 x 245 mm. This means, Micro-ATX or ITX motherboards are compatible. The RM3 can also accommodate standard ATX power supplies and the case has four expansion slots. The installation of the motherboard is very simple - after removing the left glass panel it can be installed with little effort.

The high-quality and well-manufactured Mini-Tower RM3 can accommodate graphics cards with a maximum length of 310mm and CPU coolers with a maximum height of 170mm.

The ventilation system of the RM3 is simple but still very effective. One 120mm fan is installed in the rear of the case that intakes cooler air into the interior of the case. The special frame on the bottom of the RM3 includes another 120mm fan and the power supply; this fan also intakes air into the case. Both of these fans are with supplied with dust filters to help reduce the amount of dust brought into the case. The fan installed on the top of the case is 140mm and acts as the exhaust fan.

In order to guarantee a particularly smooth-running system, the hard disk drives are anti-vibration mounted at the bottom of the RM3. You can install 2x 2.5" HDD / SSD on the special frame on the bottom of the case and another behind the motherboard. Additionally two 3.5" HDDs or 2.5" SSDs can be installed towards the front of the case.

Another feature of the RM3 is the possibility to install a 120mm water cooling system, but this is installed at the front of the case and therefore installing the aforementioned two 3.5" HDDs or 2.5" SSDs would not be possible. Installing a water cooling radiator would also decrease the maximum length of compatible graphics card down to 285mm (depending on the thickness of the radiator used).

Two USB 3.0 and the obligatory audio connectors are conveniently available at the front of the case.

SpecificationsRM3 BlackRM3 Silver
Manufacturer numberJB RM3 B JB RM3 S
Compatible motherboardMATX and ITX
3.5 inch drive bay internal2
2.5 inch drive bay internal5 max
Case fan (top)1x 140 mm
Case fan (rear)1x 120 mm
Case fan (bottom)1x 120 mm
Dimensions (mm)385 x 215 x 336 (H x W x D)
Weight7.28 kg
Maximum height of CPU coolers170mm
Maximum VGA Card Length285mm (310mm without front HDD mounted)
Front ports2x USB3.0, headphone and Mic
Warranty24 months
EAN barcode4250140354907 4250140354952

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