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Reduce your chassis footprint, without compromising on hardware. The Jonsbo D31 Micro-ATX PC Case has a precise structural layout that enables you to instal all the latest and greatest hardware, whilst only having a 31.3L volume. The sleek, smooth panels make this case effortlessly blend into any aesthetic, with an amazing showcase of your gaming hardware thanks to the tempered glass side. Plus, there is extensive support for cooling components as well as ventilation integrated throughout the chassis. Stylish, cool performance from the Jonsbo D31.
The Jonsbo D31 PC Case balances compact sizing and sleek style. This chassis has a Micro-ATX form factor, with an overall small footprint yet a spacious 31.3L volume. The steel panels are smooth with distinct lines for a crisp and clean finish. Available in two colours, this model is classic black. Plus, the tempered glass side panel offers an amazing view into the chassis, perfect for showcasing all your high-end hardware.
There is extensive cooling support throughout the Jonsbo D31. To start with, the top panel has 92% coverage of high-density mesh, facilitating superior exhaust performance. What’s more, much of the internal structure also sports ventilation, to enhance airflow throughout the case.
You can instal an array of fans and AIO radiators in the Jonsbo D31. The top panel can accommodate either three 120mm or 140mm fans or an AIO radiator up to 360mm. This is also true of the bottom panel. Both the front and rear panels can hold a singular 120mm fan. Plus, there is clearance for a CPU cooler up to 168mm tall. Overall, this allows for a versatile thermal solution, whether you opt for air- or water-cooling.
The Jonsbo D31 is a compact chassis and can accommodate motherboards up to the Micro-ATX form factor. There are four expansion slots to support PCIe devices, such as graphics cards. Naturally, with its small footprint, there are a few limitations on what hardware can be installed. It should be noted that three-slot GPUs need to be installed on the second PCIe expansion slot to enable the standard cooling configuration on the bottom panel. However, thanks to the four power supply mounting options, you have incredible flexibility in terms of the graphics card and PSU.
The power supply is mounted onto the front panel and can orientated with the air intake facing into the chamber or into the frame. There is subtle ventilation down the side of the front panel to enable air intake, should you opt for the latter. On top of this, there are four mounting positions available, which will determine what size GPU and PSU you can use in this build.
Level One: This is the topmost mounting positing. With a 140mm long PSU, you can instal a graphics card up to 400mm long. Should you need a larger power supply, between 150mm and 160mm, then the graphics card size will range between 342mm and 360mm. As the PSU is near the top of the chassis, you are limited to a 280mm AIO or two fans upon the ceiling.
Level Two: This places PSU 15mm lower than the top position. Putting a PSU measuring 140mm to 160mm in this slot enables you to install a GPU between 342mm and 360mm. Plus, you can fit the full three 120mm fans on the top panel.
Level Three: This mount is 21.6mm lower than level two. With a 140mm power supply, you can instal a GPU between 342mm and 360mm. If you are installing an NVIDIA RTX 40 Series graphics card, this is the recommended level and PSU size. Should you need a larger power supply, between 150mm and 160mm, then the GPU clearance reduces to 335mm. At this height, there is also clearance for 360mm AIO radiators on the top panel.
Level Four: The lowest of the mounts, this is 15mm below level three. Here you can mount a PSU between 140mm and 160mm with a GPU up to 330mm long. There is also ample space for a 360mm AIO radiator on the top panel.
Providing you with a flexible storage solution, the Jonsbo D31 accommodates three drives. On the bottom of the chassis, there is a mount for a singular 3.5” HDD. Upon the back of the motherboard tray, there are two further mounts for 2.5” SSDs. Support for both speed and capacity. Hardware is incredibly easy to instal, as well, thanks to the toolless design this case sports. It disassembles into nine sections, creating ease of access to every part of the chassis.
The Jonsbo D31 sports great connectivity. Placed towards the lower edge of the front panel, the I/O features a USB 3.0 and USB-C port, as well as an audio and mic jack. Plus, there is a seamless power button placed above them, to keep the design sleek and fresh.
| Brand | Jonsbo |
| Model | D31 Standard PC Case |
| Colour | Black |
| Form Factor | Micro-ATX |
| Dimensions | 205mm x 363mm x 452mm W x H x D |
| Volume | 31.3L |
| Materials | 0.6mm steel 1.7mm steel Tempered glass |
| Motherboard Support | Mini-ITX DTX Micro-ATX |
| Expansion Slots | 4 |
| GPU Support | 330mm – 400mm GPU size depends on PSU size and placement |
| PSU Support | ATM power supply Four mounting options |
| Storage | 1 x 3.5” HDD 2 x 2.5” SSD bays on motherboard backplate |
| Fan Support | Top: 3 x 120mm or 2 x 140mm fans Bottom: 3 x 120mm or 2 x 140mm fans Front: 1 x 120mm fan Rear: 1 x 120mm |
| Radiator Support | Top: 1 x 360 / 280 / 240 AIO Bottom: 1 x 360 / 240 AIO Rear: 1 x 120 AIO |
| CPU Cooler | Up to 168mm tall |
| I/O Panel | 1 x USB 3.2 Gen 2 Type-C 1 x USB 3.0 1 x Audio and mic |
| Weight | Net: 5.9kg Gross: 7kg |
| Colour | |
| Primary Colour | Black |
| Secondary Colour | Transparent |
| Fan Main Colour (Frame) | Black |
| Fan Main Colour (Rotor) | White |
| Materials | |
| Materials | Steel, Tempered Glass |
| Expansion Slots | |
| Expansion slots / PCI slots | 4 |
| Drive Bays | |
| 2.5 inch internal drive bay | 2 |
| 3.5 inch internal drive bay | 1 |
| Hot swap drive bays | No |
| Case | |
| Case Type | Tempered Glass Case |
| Features | |
| Housing feedthrough | No |
| Display | |
| Display Included | No |
| Case Features | |
| I/O position | Front |
| Side panel | closed |
| Front door | No |
| Cable Management | Yes |
| Filters included | Yes |
| Noise dampening | No |
| Mainboard slide / tray | No |
| Remote included | No |
| Transport system | No |
| Motherboard Support | |
| Compatible motherboard formats | Micro-ATX, Mini-ITX, DTX |
| Max. Motherboard Format | Micro-ATX |
| Internal Dimensions | |
| Max. CPU Cooler Height | 168 mm |
| Max. GPU Length | 400 mm |
| Max. PSU Length / Depth | 140 mm |
| Inner Volume | 31.3 l |
| Radiator Support | |
| Max. Radiator Compatibility | 1x Single (120 mm), 2x Triple (360 mm) |
| Additional Contents | |
| Included fans | None |
| Lighting | |
| Lighting | Yes |
| Fan / RGB control | No |
| Lighting Colour | RGB |
| Power Supply | |
| PSU included | No |
| PSU Format | ATX |
| Power Supply Position | front |
| Dimensions | |
| Length / Depth | 452 mm |
| Width | 205 mm |
| Height | 363 mm |
| Weight | 7 kg |
| External Ports | |
| USB 3.2 (external) Type C | 1 |
| USB 3.1 (external) Type C | 1 |
| USB 3.0 (external) Type A | 1 |
| Audio outputs & inputs | 1x output / input comb. (3.5 mm jack, 4-pin, TRRS) |
| Card reader | No |
| Fan Support | |
| 120 mm fans | 8 |
| 140 mm fans | 4 |
I fitted my components in this case because the last case (only a week old) had terrible airflow. Really pleased I did as it runs about 20 deg C cooler. Also it was much easier to build in, and with the RGB through the tempered glass it looks great.
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