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Jonsbo RM3 Mid Tower Gaming Case - Black

Jonsbo RM3 Mid Tower Gaming Case - Black

CCL Code: CAS3519

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  • Jonsbo RM3 Mid Tower Gaming Case - Black
  • Jonsbo RM3 Mid Tower Gaming Case - Black
  • Jonsbo RM3 Mid Tower Gaming Case - Black
  • Jonsbo RM3 Mid Tower Gaming Case - Black
  • Jonsbo RM3 Mid Tower Gaming Case - Black
  • Jonsbo RM3 Mid Tower Gaming Case - Black
  • Jonsbo RM3 Mid Tower Gaming Case - Black

Save 5% when you buy 3 or more eligible different items*

Jonsbo RM3 Mid Tower Gaming Case - Black


Key Features:

  • Max Motherboard Size: mATX
  • Tempered Glass Side
  • 5 x 2.5" / 2 x 3.5" Bay(s)
  • PSU Not Included
CCL Code: CAS3519

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The deliberately simple design of brushed aluminium in combination with two tempered glass full-sized windows is just one of the main features of the RM3. In this RGB version, the RM3 is equipped with two 120mm FR-531 RGB fans on the rear of the case and at the bottom. In addition, the housing includes a LB3 RGB LED strip.

The RM3's two RGB fans can be connected along with the Jonsbo nameplate and the LED strip to the included RGB controller. Alternatively, if the motherboard is equipped with a 4-pin RGB headers (such as ASUS Aura or MSI Mystic Light) you can connect the RGB products directly to the motherboard and control them through the appropriate software.

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.


  • Max GPU Length: 310mm (or 285mm with front radiator)
  • Max CPU Cooler Height: 170mm

Main Features

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

Get 5% off PC Components, Peripherals and selected Monitors when you buy three or more*

USE CODE: UPGRADE5 at checkout

For a limited time only, buy at least three different PC components or Peripherals from different qualifying categories and get 5% off those items when you use code UPGRADE5 at checkout. *Terms & Conditions apply.

Qualifying categories are Processors, Motherboards, Desktop Memory, Solid State Drives, Hard Disk Drives, Power SuppliesCPU CoolersCases, MonitorsKeyboards, Mice, HeadsetsLaptop Cases and Bags.

Promotional Period: From 3rd June 2024 till 20th June 2024.

Terms and Conditions

Cannot be combined with any other offer. UK residents only. Offer available on products in qualifying categories. Discount will apply to three or more items bought from separate categories (e.g. one processor, one motherboard and one keyboard). It will not apply to multiples from categories (e.g. three graphics cards).

Discount will be applied to the items in your basket when you enter the promo code UPGRADE5 at the checkout stage - please double-check your basket to ensure the offer applies correctly when prompted to add a discount code.

Offer does NOT apply to systems that have such components. CCL reserve the right to end this offer at any time. Offer may not be substituted, exchanged, sold, or redeemed for cash or other goods or services. Offer only available on orders placed on - offer is not available via telephone or our eBay or Amazon stores.

Promotional Period: until till June 20th 2024.



Internal Expansion Bays 5 x 2.5"
2 x 3.5"


Expansion Slots 4 x Full Height


USB Ports 2 x USB 3.0
Headphone Ports 1 x 3.5mm Jack
Microphone In Port 1 x 3.5mm Jack


Cooling System Top: Supports 1 x 140mm fan
Rear: Supports 1 x 120mm fan (RGB fan included)
Bottom: Supports 1 x 120mm fan (RGB fan included)
Power Supply ATX Power Supply supported


Warranty 2 Years


Form Factor Mid Tower Case
Case Colour Black
Material Aluminium
Tempered Glass
Motherboard Compatibility MicroATX
Width 215 mm
Depth 336 mm
Height 385 mm
Weight 7.28 kg

Key Features

Firewire No
Max Motherboard Width 244 mm
Max Motherboard Height 244 mm
Main Colour Black
Case Type Tower
USB 3.0 Support Yes
Case Form Factor Mid Tower
Power Supply Included No
Optimised for Gaming
80Plus Rated No
PSU Form Factor ATX
Display Model in Showroom No
Max 3.5" Drives 2
Max 2.5" Drives 5
Micro-ATX Yes
Cooler Height 170 mm
Built-in Card Reader No
USB Type-C Support No
Front HDMI No
Side Panel Type Tempered Glass
GPU Length 285 mm
Front Audio Type Separate
Maximum Motherboard Size Supported mATX
Power Requirement (auto) 3 W
Create Your Own Gaming PC (CCL) Yes

Item Details

Manufacturer Jonsbo
Manufacturer Code JB-RM3 B-RGB
EAN 4250140374905
Condition New

Warranty Information

Warranty 2 Years

Manufacturer Information

Manufacturer Jonsbo
Manufacturer Code JB-RM3 B-RGB
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