Lian Li B4-mATX Wood Mini Tower Black, Wood
Build like never B4
Co-developed with DAN Cases, the B4-mATX’s modular design unlocks versatile build possibilities. With multiple color, panel, and layout options, plus an optional accessory, it adapts to a wide range of styles.
Compact Design, Broad Compatibility
With a compact 21.3L volume, the B4-mATX delivers impressive hardware compatibility, supporting M-ATX motherboards, 360mm AIOs, 140mm ATX PSUs, and up to 358mm 4-slot GPUs.
Minimal Design,Multiple Styles
The B4-mATX offers a clean mesh panel for an airflow-focused look or a real wood panel for a warmer, refined setup. Both support front-to-back airflow, balancing cooling performance with a streamlined exterior.
Vertical Mode,Maximized Desk Space
The vertical layout improves desk space efficiency by up to 30%. Integrated rear feet allow quick and easy switching between different usage modes.
Rotatable AC Power Connector
Designed for both horizontal and vertical configurations, the rotatable AC inlet adapts to your setup. Face it outward for convenient cable access, or rotate it inward in vertical mode to avoid clearance limitations.
REVERSIBLE Rear Fan Bracket
The rear fan bracket features a reversible design for greater layout flexibility. It can be installed outward to create more clearance for liquid cooling, or inward to position the fan closer to the CPU airflow path and improve CPU air-cooling performance by up to 1°C.
Recommended Liquid Cooling Configuration
The B4-mATX supports 360mm and 280mm radiators with up to 52mm total thickness.
Extra Intake, Better Cooling
Supports a 120 × 120 × 15mm slim front fan with an SFX PSU and GPU under 343mm long, helping improve intake airflow.
PRE-INSTALLED 15MM SLIM FANS,
Flexible Airflow Design
Two pre-installed 120 × 120 × 15mm slim fans on the top provide enhanced cooling performance. Operating up to 1800 RPM, they are daisy-chained to reduce cable clutter.
Flexible GPU & Fan Support
Supports up to 358mm long 4-slot graphics cards. Bottom fan support varies by GPU thickness: 2.5-slot GPUs support 25mm fans, 3-slot GPUs support 15mm slim fans, and 3.5-slot or thicker GPUs do not support bottom fans.
Easy GPU Installation
The removable front fan bracket lets large graphics cards slide in from the front side of the chassis for a smoother installation process.
Pre-Installed
GPU Anti-Sag Bracket
Built to handle GPUs up to 4 slots thick and 358mm long, the case comes equipped with a dedicated anti-sag bracket to ensure stability and prevent sagging.
Modular Design, Easier Installation
Tool-less removable panels offer quick and easy access for installation and cable routing, while a removable bottom dust filter helps maintain a clean system.
Removable Top Fan Bracket
The removable top fan bracket provides easier access for routing and managing CPU 8-pin cables, while also making it simpler to configure the front-top fan as intake for air-cooler setups.
Easier Cable Management
Cable tie points around the PSU and top brackets help secure CPU 8-pin and PSU cables for a cleaner, more organized build.
In vertical mode, a removable bracket and rotatable cable guide work together to route cables cleanly through the bottom of the case.
Flexible Storage Support
Supports 1 x 2.5” SSD at the front, with space at the bottom for either 1 x 2.5” SSD or 1 x 3.5” HDD.
ACCESSIBLE CONNECTIVITY
The I/O layout keeps essential ports easy to reach in both traditional and vertical layouts, with a high-speed USB Type-C port supporting up to 20Gbps transfer speeds.
In Collaboration with DAN Cases
Co-developed with Daniel Hansen of DAN Cases, the B4-mATX combines flexible modularity with LIAN LI’s precision craftsmanship in a compact form.
Hard Compatibility
Tool-less removable panels offer quick and easy access for installation and cable routing, while a removable bottom dust filter helps maintain a clean system.
| Design | |
|---|---|
| Form factor | Mini Tower |
| Type | PC |
| Material | Steel, Walnut, Beech |
| Product colour | Black, Wood |
| Supported motherboard form factors | micro ATX, Mini-ITX |
| Number of 3.5" bays | 1 |
| Number of 2.5" bays | 1 |
| Side window | No |
| Suitable for | Gaming |
| Illumination | No |
| Capacity | 21.3 L |
| Built-in speaker(s) | No |
| Anti-dust filter | Yes |
| Cable management | Yes |
| On/off button | Yes |
| Maximum CPU cooler height | 16.2 cm |
| Maximum graphics card length | 35.8 cm |
| Maximum PSU length | 14 cm |
| Power supply | |
|---|---|
| Power supply included | No |
| Supported power supply form factors | SFX, ATX |
| Display | |
|---|---|
| Built-in display | No |
| Ports & interfaces | |
|---|---|
| USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity | 2 |
| USB 3.2 Gen 2 (3.1 Gen 2) Type-C ports quantity | 1 |
| Combo headphone/mic port | Yes |
| Cooling | |
|---|---|
| Number of front fans supported (max) | 1 |
| Front fans diameters supported | 120 mm |
| Number of side fans supported (max) | 3 |
| Side fans diameters supported | 120,140 mm |
| Number of rear fans supported (max) | 1 |
| Rear fans diameters supported | 120 mm |
| Top fans installed | 2x 120 mm |
| Number of bottom fans supported (max) | 3 |
| Bottom fans diameters supported | 120,140 mm |
| Maximum air pressure | 2.4 mmH2O |
| Fan speed | 0 - 1800 RPM |
| Maximum airflow | 64.2 cfm |
| Liquid cooling installed | No |
| Liquid cooling capability | Yes |
| Side radiator sizes supported | 360,280,240 mm |
| Storage | |
|---|---|
| Supported HDD sizes | 2.5,3.5" |
| SSD form factor | 2.5" |
| Certificates | |
|---|---|
| Waste Electrical and Electronic Equipment (WEEE) compliance | Yes |
| Technical details | |
|---|---|
| Warranty period | 1 year(s) |
| Weight & dimensions | |
|---|---|
| Width | 191 mm |
| Depth | 420 mm |
| Height | 288 mm |
| Other features | |
|---|---|
| Noise level | 30.3 dB |
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Grade
-
Part Number
Brand New – This product is Brand New and in it’s original
packaging.
New - Open Box - This product is unused but the box has been opened.
New – No Box – This product is unused but doesn’t come with
the original box/packaging.
Refurbished – This product has been refurbished by ourselves
or by the manufacturer.
Excellent Used – This item is used, tested and fully working
but in like new condition. It may come with it’s original packaging or not,
please check the product description.
Good Used – This item is used, tested and fully working but
will show signs of cosmetic wear and tear. It may come with it’s original packaging
or not, please check the product description.
Parts – This item is sold just for parts, meaning it is
unworking or unable to serve it’s purpose. It may come with it’s original packaging
or not, please check the product description.
Brand New Products: All our Brand New products come with Manufaturer warranty. These can vary in length and it's important to check with the manufaturer of the product what warranty they provide and what is covered.
Used Products: All our used products come with 1 years warranty provided by us and some products may have manufaturer warranty.
Refurbished Products: With our refurbished products, we offer a free 3-month warranty which covers all software and hardware issues, that have not been influenced by the customer. There is also Manufactured Refurbished products which they will specify how long their warranty is.
Custom Gaming PCs: All our Custom PCs by default come with 3 years warranty. This includes parts and labour. You can also upgrade to 5 years warranty. Our warranty includes all hardware issues relating to the machine. If there is any faults, we will attempt to solve this remotely and if needed get the PC collected and back to base for repair.
Read more - Warranty Information
