Product Highlights
Form Factor
Lian Li B4 mATX
- Compact 21.3L mATX case with broad compatibility.
- Includes 2 pre-installed 120 × 120 × 15mm slim top fans.
- Removable top bracket simplifies CPU 8-pin routing and fan setup.
- Removable front bracket allows easier large GPU installation.
- Optional Vertical AeroDeck adds up to 3 × 120mm or 2 × 140mm fans for GPU cooling.
Product Highlights
Form Factor
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Product details
Technical Specifications
PHYSICAL SPECIFICATIONS
- Model No.: B4X / B4W (Mesh) — B4X-WD / B4W-WD (Wood)
- Color: Black / White
- Dimensions (D x W x H): 420 x 191 x 288mm
- Material: Steel (Mesh) — Steel & Wood, Walnut/Beech (Wood)
MOTHERBOARD SUPPORT
- Back-Connect: No
- Compatible boards: Micro-ATX, Mini-ITX
STORAGE
- Front: 2.5" SSD x 1
- Bottom: 3.5" HDD x 1 or 2.5" SSD x 1
CLEARANCE
- GPU length: 358mm
- CPU cooler height: 159mm (165mm without side fan bracket)
POWER SUPPLY
- PSU support: ATX (up to 140mm) / SFX
RADIATOR SUPPORT
- Side (with SFX PSU): 360mm / 280mm / 240mm
- Side (with ATX PSU): 240mm
FAN SUPPORT — MESH EDITION
- Top: 120mm x 2 (pre-installed)
- Side (with SFX PSU): 120mm x 3 / 140mm x 2
- Side (with ATX PSU): 120mm x 2
- Front (SFX PSU only): 120mm slim fan x 1
- Bottom: 120mm x 3 / 140mm x 2
- Rear: 120mm x 1
FAN SUPPORT — WOOD EDITION
- Top: 120mm x 1
- Side (with SFX PSU): 120mm x 3 / 140mm x 2
- Side (with ATX PSU): 120mm x 2
- Front: 120mm x 3
- Bottom: 120mm x 1
INCLUDED FANS
- Top: 120 x 120 x 15mm (x2)
DUST FILTER
- Bottom: Magnetic filter x 1
I/O PORTS
- USB 3.0 Type-A x 2
- Power button x 1
- Audio jack x 1
- USB 3.2 Type-C x 1