Lian Li DAN Cases B4 Micro-ATX mini-tower behuizing - wit

The Lian Li DAN Cases B4 crams a 12.1-liter interior into a sleek white aluminum shell, supporting Micro-ATX motherboards and triple-slot GPUs up to 326 mm. Its reversible chassis design lets you flip the layout for left- or right-side window orientation, while magnetic dust filters and vented panels keep airflow clean.

Overview

Engineered for compact builds without compromise, the B4 combines an aluminum exterior with a steel interior for rigidity. It accommodates SFX/SFX-L power supplies, up to 280 mm radiators on top or bottom, and dual 140 mm fans in both positions. The front I/O offers USB 3.0 Type-A and USB 3.1 Type-C for modern connectivity.

What stands out

• Reversible chassis design for flexible orientation
• Supports triple-slot GPUs up to 326 mm
• Dual 280 mm radiator support (top/bottom, max 30 mm thickness)
• Magnetic dust filters on top, bottom, and front
• Dedicated cable management space behind motherboard tray

Technical details

• Form factor: Micro-ATX Mini Tower
• Motherboard compatibility: Micro-ATX, Mini-ITX
• Material: Aluminum exterior, steel interior
• Color: White
• Internal volume: 12.1 liters
• Expansion slots: 4
• Drive bays: 2x 2.5" SSD/HDD or 1x 3.5" HDD + 1x 2.5" SSD/HDD
• Front I/O: 1x USB 3.0 Type-A, 1x USB 3.1 Type-C, power button
• PSU compatibility: SFX, SFX-L
• Max GPU length: 326 mm (without front fan/radiator)
• Max GPU width: Triple-slot (60 mm)
• Max CPU cooler height: 130 mm (without side fan)
• Top fan support: 2x 120 mm or 2x 140 mm
• Bottom fan support: 2x 120 mm or 2x 140 mm
• Front fan support: 1x 120 mm or 1x 140 mm
• Radiator support (top/bottom): Up to 280 mm (max 30 mm thickness)
• Side panel type: Vented aluminum
• Dust filters: Magnetic (top, bottom, front)
• Unique feature: Reversible chassis design
• Cable management: Dedicated space behind motherboard tray

Our verdict

With its compact footprint, versatile layout, and support for high-end components, the B4 is a top choice for builders seeking a premium small-form-factor Micro-ATX case.