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Incl. VAT 76,89
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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.
Form factor
Mini Tower
Type
PC
Product colour
Black
Supported motherboard form factors
micro ATX, Mini-ITX
Number of 3.5" bays
1
Number of 5.25" bays
0
Material
Steel
Number of 2.5" bays
1
Side window
No
Suitable for
Gaming
Illumination
No
Built-in speaker(s)
No
Anti-dust filter
Yes
Capacity
21.3 L
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 included
No
Supported power supply form factors
SFX, ATX
USB 2.0 ports quantity
0
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
USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity
0
USB 3.2 Gen 2x2 Type-C ports quantity
0
Combo headphone/mic port
Yes
Built-in display
No
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
Fan speed
0 - 1800 RPM
Maximum airflow
64.2 cfm
Maximum air pressure
2.4 mmH2O
Liquid cooling capability
Yes
Liquid cooling installed
No
Side radiator sizes supported
360,280,240 mm
Supported HDD sizes
2.5,3.5"
SSD form factor
2.5"
Warranty period
1 year(s)
Waste Electrical and Electronic Equipment (WEEE) compliance
Yes
Width
191 mm
Depth
420 mm
Height
288 mm
Noise level
30.3 dB
The item is known under the following item numbers in our system
EAN:
4718466023261
SKU:
LIA-B4X
Why do I find that the same product is available on different item numbers?
Manufacturers often release the same product with different item numbers, typically just different versions of the packaging. For example, the packaging may be targeted at different countries.
We try our best to unify the products, but it can happen that the same product appears on different item numbers in our system.