FREE next day delivery on in-stock items over £50! Offer ends soon!


Rated Excellent
4.8 star rating
Free delivery over £50
to most of the UK
0% interest for 4 months
on purchases over £99
Custom PCs built fast
delivered in 4-5 days
3 year on-site PC warranty*
including parts & labour

FREE next day delivery on in-stock items over £50! Offer ends soon!

Jonsbo C3 Plus Mid Tower Gaming Case

CCL Code: CAS3386
Manufacturer Code: JB-C3-PLUS-SILVER
| Manufacturer: Jonsbo

Key Features:

  • PSU not included
  • 0 x 5.25" External Bay(s)
  • 3 x 2.5", 3 x 3.5" HDD Bay(s)
  • Max MB Size: Micro-ATX
  • Tempered Glass

Delivery Options

Tomorrow via Free Next Day - PROMO

Free Delivery by Friday 10th December

Order within

Collection Options

Tomorrow from Local Collection Point


inc VAT

Hurry, only 2 left!

Buying in bulk or need help? Email our Business Team.



The C3 Plus is an evolution of the hugely popular C3. Jonsbo has taken an outstanding product and made some detailed improvements - the C3 Plus is ideal as a media server and is aimed at price-conscious users who do not want to compromise on quality.

Changes in manufacturing have given the C3 Plus superior stability. The C3 Plus combines a high-grade exterior made of 1.5 mm thick aluminum with an extremely stable interior made of 0.8 mm thick SECC steel. To show off your build, the C3 Plus is equipped with a full-surface window side panel made of tempered glass.

When looking at the interior, the first thing you notice is the power supply cover, and the C3 Plus also has the option of hiding the cables behind the motherboard tray. The C3 Plus is equipped with a 140 mm case fan in the lid and there are a number of additional air holes on the front right side of the housing to improve the supply of fresh air.

The intentionally simple design of the C3 Plus blends perfectly with any environment. The I/O panel with power button and 2 x USB 3.0 is inconspicuously integrated on the front left side of the front. Two color options - black and silver - are available.

This high-quality, well-engineered Micro-ATX chassis supports motherboards up to a maximum size of 245 x 245 mm. The C3 Plus offers space for standard ATX power supplies and has a total of 4 expansion slots. The tidy interior of the C3 Plus can be equipped with long VGA cards up to 280 (340) mm in length. CPU coolers up to a mounting height of 170 mm can also be accommodated in the C3 Plus.

The C3 can be equipped with a 2.5-inch SSD and four 3.5-inch HDD or three 2.5-inch HDD / SSD and three 3.5-inch drives. Behind the front is a specially designed mounting frame for two 3.5 inch drives. This can be removed for easy installation of the drive after loosening a few screws. You can choose to install two 2.5 "or 3.5" drives at the top of the power supply cover. At the bottom of the case there is a mounting space for a 3.5 inch HDD. Finally, a 2.5-inch SSD can be mounted behind the motherboard tray.

The ventilation system of the C3 Plus offers a variety of mounting locations for fans to ensure outstanding ventilation. A quiet running 140 mm fan is already preinstalled under the housing cover. A 120 mm fan can be mounted on the rear of the housing and another 120 mm model can be installed on the power supply cover inside the case. Finally, instead of the two 3.5-inch drives behind the front, two 120 mm fans to improve the fresh air supply can be mounted. There is 35 mm of space between the front and the frame, which makes it possible to install the fans or even the radiator of a compact water cooling system here.

The C3 Plus is aimed at users who are looking for a particularly attractive PC for typical living room applications or even a sophisticated gaming system. The housing perches on vibration-decoupled housing feet in the appealing look of high-quality hi-fi components. Externally, the user has two USB 3.0 "Super Speed" ports available. Thus, external drives or USB sticks can be connected quickly and easily.


  • Max GPU Length: 280mm if front fans installed, else 340mm
  • Max CPU Cooler Height: 170mm

User Controls

User Controls Power


Internal Expansion Bays 3 x 2.5"
3 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 Front: Supports 2 x 120mm fans
Top: Supports 1 x 140mm fan (included)
Rear: Supports 1 x 120mm fan
Bottom: Supports 1 x 120mm fan
Power Supply ATX Power Supply supported


Form Factor Mid Tower Case
Case Colour Silver
Material Steel
Tempered Glass
Motherboard Compatibility MicroATX
Width 218 mm
Depth 360 mm
Height 398 mm
Weight 5.3 kg


Warranty 2 Years

Key Features

Firewire No
Main Colour Silver
Case Type Tower
USB 3.0 Support Yes
Case Form Factor Mid Tower
Power Supply Included No
Optimised for Gaming
80Plus Rated No
Display Model in Showroom No
L.E.D Fan No LED
Internal 3.5" Bay 3
Internal 2.5" Bay 3
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 340 mm
Front Audio Type Separate
Maximum Motherboard Size Supported Micro-ATX

Item Details

Manufacturer Jonsbo
Manufacturer Code JB-C3-PLUS-SILVER
EAN 4250140370204
Condition New

Warranty Information

Warranty 2 Years

Manufacturer Information

Manufacturer Jonsbo
Manufacturer Code JB-C3-PLUS-SILVER
Questions and Answers

Do you have you a question about the Jonsbo C3 Plus Mid Tower MicroATX Case (Silver)?

4 / 5 2 reviews

Andrew Masson

12 months ago

I love this case, it looks super sleek with the brushed aluminium, feels really solid gives a high quality appeal. There is plenty of space for cable management although this case is far more compact that some other M-ATX cases.There is a honey comb pattern on the rear fan guard and the power supply shroud which looks cool and unique. You can likely tell from the pictures that this is not a high airflow case but with the addition of another 2-3 fans, components stay sufficiently cool. Note that this case is designed more for a media server build, the front fan mount is at a slight angle and can ether fit SSD's or a pair of fans. Also note that without removing the fan mount you will have to stick with a smaller GPU. I have used this case to build a compact gaming rig, using an RTX 3060 TI & a 155 MM Deepcool GAMMAXX GTE V2 cooler, both fit with no issues at all. Overall this case is a little quirky but with a quality simplistic exterior finish & a nice compact design.


November 2018

CCL delivered on time with slightly damaged packaging but product workout fine. I give 5 star to them never the less. The Jonsbo C3 One of the most Compact stylish aluminium case at present. I bought the silver black tinted glass looks gorgeous . Got full size air cooler fitted with 5GHz 8700k and GTX 1080 triple fan - slot GPU with 600W Power supply all nicely fitted. Cons/complain The cable holes should have rubber and lower front side should have a dust protection aswell like the top, they could have include a slim DVD slot on top as its still used these days 2018 For 50-ish British pound its a very good case and recommended.