Description
The LIAN LI B4 m-ATX redefines the small form factor (SFF) landscape by offering a 21.3L volume that refuses to compromise on component support. Whether you are aiming for a minimalist desk setup or a high-airflow gaming powerhouse, this chassis provides the structural flexibility to house full-sized components in a remarkably tight space.
- Enthusiasts building high-end gaming PCs who need to fit long GPUs in a compact footprint.
- Minimalists looking for a clean, desk-friendly aesthetic without sacrificing thermal performance.
- SFF builders who prefer the versatility of Micro-ATX motherboards over more restrictive Mini-ITX options.
- Users interested in custom cooling loops or high-airflow configurations using multiple 120mm/140mm fans.
- Professionals requiring a portable yet powerful workstation that fits into tight studio or office environments.
- Dimensions: 420mm x 191mm x 288mm
- Motherboard Support: Micro-ATX, Mini-ITX
- GPU Clearance: Up to 358mm
- CPU Cooler Height: 162mm (with side bracket) / 168mm (without)
- Power Supply Support: ATX (max 140mm) or SFX
- Radiator Support: Up to 360mm (with SFX PSU) or 240mm (with ATX PSU)
- Fan Capacity: Up to 9 fans total
- I/O: 2x USB 3.0 Type-A, 1x USB 3.2 Type-C, Audio, Power button
Building in the B4 m-ATX is a streamlined experience thanks to the removable top and front brackets, which simplify cable management and hardware installation. The inclusion of two pre-installed 120mm slim fans at the top provides an immediate thermal advantage, while the option for horizontal or vertical layouts allows the case to adapt to your specific desk orientation. The build quality is robust, with options for mesh panels for maximum airflow or wood-accented panels for a premium, furniture-grade look.
Compared to traditional mid-tower cases, the B4 m-ATX offers a significantly smaller footprint while maintaining compatibility with standard ATX power supplies and large GPUs. Unlike many ITX-only cases, the B4 provides the extra PCIe slots and motherboard connectivity of the Micro-ATX standard, making it a more practical choice for users who need additional expansion cards or memory slots without the bulk of a full-tower chassis.
- Does the B4 m-ATX support standard ATX power supplies? Yes, it supports ATX power supplies up to 140mm in length.
- Can I install a 360mm radiator in this case? Yes, a 360mm radiator is supported when using an SFX power supply.
- What is the maximum GPU length supported? The case accommodates graphics cards up to 358mm in length.
- Does the case come with pre-installed fans? Yes, it includes two 120x120x15mm slim fans pre-installed at the top.
- Is there a vertical GPU mounting option? Yes, the optional AeroDeck accessory allows for specialized GPU cooling and mounting configurations.
