1. Kupu Whakataki
This manual provides detailed instructions for the assembly, installation, operation, and maintenance of your JONSBO D400 Black ATX Mid-Tower PC Case. Please read this manual thoroughly before beginning installation to ensure proper setup and safe operation.

Figure 1: JONSBO D400 Black ATX Mid-Tower PC Case with internal components.
2. Nga Hua o te Hua
- Ahu: 488mm (L) x 239mm (W) x 514mm (H) (including feet).
- Hoahoa: Three-dimensional, beveled, curved glass design for clear visibility of internal hardware.
- Tautoko Papamatua: Compatible with ATX, Micro-ATX, and Mini-ITX BTF motherboards.
- GPU Compatibility: Ka tautoko i ngā kāri whakairoiro tae atu ki te 450mm te roa.
- Tautoko PSU: ATX PS2 power supplies, up to 200mm in length.
- Kōwhiringa whakamatao:
- Air Cooling: CPU cooler height up to 169mm.
- AIO Support: Top 240mm / 280mm / 360mm (optional); Side 360mm (optional).
- Fan Positions: Top (3x 120mm or 2x 140mm), Side (3x 120mm), Rear (1x 120mm), Power Compartment (3x 120mm).
- Takiwa Puku: 2x 2.5" SSD or 1x 3.5" HDD + 1x 2.5" SSD; 1x 2.5" SSD or 1x 3.5" HDD in PSU compartment.
- Tauranga I/O Mua: 1x USB 3.2 Gen2 Type-C, 2x USB 3.0, 1x Audio + 1x Mic (2-in-1).
- Roha i'ai: 7.

Whakaahua 2: Taha-mua view of the JONSBO D400 PC Case highlighting the curved glass design.

Figure 3: Product overview highlighting the D400's design and features.
3. Tatūnga & Tāuta
3.1 Whakaaturanga Papa Pouaka
The JONSBO D400 supports ATX, Micro-ATX, and Mini-ITX BTF motherboards. Ensure your motherboard is compatible with the case's mounting points. The case is designed to support through-hole for most back-connect motherboards, which helps in reducing visible cables inside the case for a cleaner aesthetic.

Figure 4: Internal layout of the D400 case, ready for motherboard installation.

Figure 5: Illustration of BTF motherboard compatibility and cable management space.
3.2 Tāutanga GPU
The case accommodates GPUs up to 450mm in length. It features 7 PCI slots and supports vertical GPU installation (cable not supplied, requires a third-party adapter bracket).

Figure 6: GPU installation options and length compatibility.
3.3 Whakaaturanga Whakaaturanga Hiko (PSU) Whakauru
The JONSBO D400 supports ATX PS2 power supplies up to 200mm in length. The power supply is located at the bottom of the case with independent airflow channels to ensure stable chassis temperatures.

Figure 7: PSU mounting location and dust filter access.
3.4 Te Tāutanga o te Pūnaha Whakamatao
The case offers extensive cooling support with 10 fan positions and dual AIO radiator support. CPU air coolers up to 169mm in height are supported.
- Top: 3x 120mm or 2x 140mm fans (optional) / 240mm, 280mm, or 360mm AIO radiator (optional).
- Side: 3x 120mm fans (optional) / 360mm AIO radiator (optional).
- Rear: 1x 120mm fan (optional).
- Power Compartment: 3x 120mm fans (optional).

Figure 8: Fan and AIO radiator placement options.
3.5 Drive Bay Configuration
The case provides flexible storage options:
- Back Side: 2x 2.5" SSD or 1x 3.5" HDD + 1x 2.5" SSD.
- PSU Compartment: 1x 2.5" SSD or 1x 3.5" HDD.

Figure 9: Hard drive and SSD mounting locations.
3.6 Ngā Tauranga I/O o Mua
The front I/O panel includes:
- 1x USB 3.2 Gen2 Momo-C
- 2x USB 3.0
- 1x Audio + 1x Mic (2-in-1)
4. Nga Tohutohu Whakahaere
After successful assembly, connect all necessary peripherals and power cables. Press the power button on the front I/O panel to start your system. Refer to your motherboard and component manuals for specific operating instructions related to your installed hardware.
Video 1: JONSBO D400 ATX PC case overview, demonstrating internal layout and features.
5. Tiaki
5.1 Te horoi
Regular cleaning is essential for maintaining optimal performance and longevity of your PC components. Use compressed air to remove dust from fans, radiators, and internal components. Ensure the system is powered off and unplugged before cleaning.
5.2 Ngā Tātari Puehu
The JONSBO D400 includes a bottom dust filter. Regularly remove and clean this filter to prevent dust buildup and maintain good airflow. The grille-shaped top cover also allows for multi-angle quick disassembly for cleaning and customization.

Figure 10: Top cover disassembly for maintenance and customization.
6. Te Raru
If you encounter issues, perform the following basic checks:
- Kore Mana: Ensure all power cables (PSU, motherboard, GPU) are securely connected. Check the power switch on the PSU.
- Kore Whakaatu: Verify that your monitor cable is connected to the graphics card (not the motherboard's integrated graphics ports, unless you are using integrated graphics). Reseat the GPU and RAM modules.
- Te wera nui: Check fan connections and ensure they are spinning. Clean dust filters and internal components. Verify AIO pump operation if installed.
- Waahanga Kaore i Kitea: Reseat the component (e.g., RAM, GPU, SSD). Check power and data connections.
For more complex issues, consult the manuals for your individual components (motherboard, GPU, PSU, etc.) or contact JONSBO customer support.
7. Whakatakotoranga
| Āhuahira | Whakatakotoranga |
|---|---|
| Waitohu | Jonsbo |
| Ingoa Tauira | D400 |
| Momo Take | Huarahi Maaka |
| Tae | Pango |
| Rauemi | Te whakarewa |
| Rahi Hua (LxWxH) | 488 x 239 x 514 mm (19.21 x 9.21 x 20.43 inihi) |
| Taumaha Tūemi | 23.5 pauna |
| Papamatua Hototahi | ATX, Micro-ATX, Mini-ITX (BTF Motherboard Support) |
| Roa o te GPU (Mōrahi) | 450mm |
| Teitei o te Pūwhakamatao PTM (Mōrahi) | 169mm |
| Tautoko PSU | ATX PS2 (up to 200mm) |
| Tautoko Radiator AIO | Top: 240/280/360mm (Optional); Side: 360mm (Optional) |
| Ngā Tūnga Pā | Top: 3x 120mm / 2x 140mm; Side: 3x 120mm; Rear: 1x 120mm; Power Compartment: 3x 120mm |
| Peia Bays | 2.5" SSD*2 or 3.5" HDD*1+2.5" SSD*1; 2.5" SSD*1 or 3.5" HDD*1 (PSU Compartment) |
| Tuhinga o mua | USB3.2 Gen2 Type-C*1 / USB3.0*2 / AUDIO*1+MIC*1 (2 in 1) |
| Roha Slots | 7 |

Figure 11: Visual representation of JONSBO D400 dimensions and key specifications.
8. Raihana me te Tautoko
For warranty information, technical support, or further assistance, please refer to the official JONSBO webpaetukutuku, whakapā atu rānei ki tō kaihokohoko. Puritia tō rīhiti hoko hei taunakitanga hoko mō ngā kereme pūtāhui.
JONSBO is committed to providing high-quality products and customer satisfaction. If you have any questions or require support, please do not hesitate to reach out.
Visit the Jonsbo Store: Jonsbo Official Store





