be quiet! Light Base 500 LX / Lian Li A3-mATX

be quiet! Light Base 500 LX: BGW85 · black, empty chassis

Lian Li A3-mATX: A3-mATX steel case in black or white (A3-mATX BLACK / WHITE). The Wood Edition with a wooden front (A3-mATX-WD) and the Glass Edition with 3 mm tempered glass (A3-mATX-WDG) share the interior layout but differ in materials and dust filter arrangement; the later B4-mATX is a separate case.

Specificationbe quiet! Light Base 500 LXLian Li A3-mATX
Release year20252024
Announcement and availabilityAnnounced October 7, 2025; on sale from October 21, 2025 be quiet!—
MotherboardATX, Micro-ATX, Mini-ITX be quiet!M-ATX and ITX; 4 expansion slots Lian Li
Rear-connector motherboardsASUS BTF, MSI Project Zero, Gigabyte Project Stealth layouts be quiet!—
Dimensions432 × 305 × 436 mm; length × width × height, with feet be quiet!443 × 194 × 321.5 mm (D × W × H); 306 mm tall without feet Lian Li
MaterialsSGCC steel, ABS, glass be quiet!—
Side fans3 × 120 mm Light Wings LX Reverse PWM be quiet!—
Rear fan1 × 120 mm Light Wings LX PWM be quiet!—
Top fan positions3 × 120 or 2 × 140 mm be quiet!—
Bottom fan positions3 × 120 mm; fans separate be quiet!—
Rear fan compatibility1 × 120 or 140 mm be quiet!—
Radiator120 / 240 / 360 mm at the top be quiet!—
CPU cooler clearanceUp to 185 mm high be quiet!—
Graphics card clearanceUp to 400 mm long be quiet!—
Power supplyATX PS/2; under 200 mm long; not included

Allow additional space for cable and connector bends.

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ATX / SFX / SFX-L up to 220 mm; side or front mounting

The relocatable bracket lets the power supply move to suit graphics card length; an ATX unit can also be mounted at the front on the SSD bracket.

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Drive bays1 × 3.5-inch HDD and 2 × 2.5-inch SSD be quiet!—
Expansion7 PCI slots be quiet!—
Front connections1 × USB-C 3.2 Gen 2; 2 × USB-A 3.2; combined HD Audio be quiet!—
LightingARGB button and ARGB/PWM hub; 3-pin ARGB be quiet!—
Dust filtersSide and bottom intakes be quiet!—
Case type and volume—MFF (Micro Form Factor); 26.3 L Lian Li
Material—Steel; side and top panels in steel mesh

The Wood Edition has a wooden front panel, and the Glass Edition adds 3 mm tempered glass.

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Graphics card—Up to 415 mm long, 4 slots thick

According to Lian Li, a 25 mm bottom fan limits card thickness to 61 mm (3 slots); a bottom radiator plus fan leaves no room for a graphics card. An anti-sag GPU bracket is included; vertical mounting needs a separately sold kit.

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CPU cooler—Up to 165 mm tall Lian Li
Fan support—Top: 3 × 120 mm; side: 3 × 120 mm or 2 × 140 mm; bottom: 3 × 120 mm; rear: 1 × 120 mm

The case ships without fans; they must be bought separately.

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Radiator support—Top: 360/240 mm; side: 360/280/240 mm; bottom: 240 mm (360 mm with fan at the bottom) Lian Li
Drive support—Tray: 2 × 2.5" SSD; bottom: 1 × 2.5" SSD or 1 × 3.5" HDD Lian Li
Front I/O—Power button, 2 × USB 3.0 Type-A, 1 × USB 3.1 Type-C, mic, HD audio Lian Li
Dust filter and warranty—Removable bottom dust filter; 1-year warranty Lian Li