Lian Li A3-mATX / Lian Li O11 Air Mini

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.

Lian Li O11 Air Mini: O11 Air Mini (2021); black O11AMX and white O11AMW. The O11 Dynamic Mini, O11D Mini V2 Flow and full-size O11 Dynamic are separate cases.

SpecificationLian Li A3-mATXLian Li O11 Air Mini
Release year20242021
Case type and volumeMFF (Micro Form Factor); 26.3 L Lian Li—
Dimensions443 × 194 × 321.5 mm (D × W × H); 306 mm tall without feet Lian Li—
MaterialSteel; 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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MotherboardM-ATX and ITX; 4 expansion slots Lian LiE-ATX (up to 280 mm wide), ATX, Micro-ATX, Mini-ITX

The 7-slot back panel is for ATX, Micro-ATX and ITX; the 5-slot back panel is for Micro-ATX and ITX. Both are included.

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Graphics cardUp 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 coolerUp to 165 mm tall Lian Li—
Power supplyATX / 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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Fan supportTop: 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.

Lian Li		Top 3 × 120 / 2 × 140 mm; side 2 × 120 mm; bottom 2 × 120 / 2 × 140 mm; front 2 × 120 / 2 × 140 mm; rear 1 × 120 mm Lian Li
Radiator supportTop: 360/240 mm; side: 360/280/240 mm; bottom: 240 mm (360 mm with fan at the bottom) Lian LiTop 240 or 280 mm; side 240 mm; bottom 240 or 280 mm; front 240 or 280 mm

When fitting a 240 mm radiator at the top with an ATX board, an offset bracket is used to avoid clashing with memory modules.

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Drive supportTray: 2 × 2.5" SSD; bottom: 1 × 2.5" SSD or 1 × 3.5" HDD Lian Li—
Front I/OPower button, 2 × USB 3.0 Type-A, 1 × USB 3.1 Type-C, mic, HD audio Lian Li2 × USB 3.0, 1 × USB 3.1 Type-C, 1 × HD Audio

The Type-C port needs a matching front-panel USB-C header on the motherboard.

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Dust filter and warrantyRemovable bottom dust filter; 1-year warranty Lian Li—
Size and materials—400 (D) × 288 (W) × 384 (H) mm; 4 mm aluminium panel, 0.8 mm mesh panel, 4 mm tempered glass

The mesh pattern on the front, top and side is designed to let fans draw air straight from outside.

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Graphics card and vertical mounting—Up to 362 mm long; 7 or 5 expansion slots; vertical GPU support (top or bottom mode)

With the vertical GPU bracket in top mode, two 120 mm fans can be fitted under the card; in bottom mode there is no room for them.

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CPU cooler and power supply—CPU cooler up to 170 mm; ATX power supply up to 200 mm Lian Li
Included fans—2 × 140 mm PWM at the front, 1 × 120 mm PWM at the rear

PWM fans adjust their speed to temperature using a signal from the motherboard.

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Storage—6 × 2.5-inch SSD or 3 × 2.5-inch SSD + 3 × 3.5-inch HDD

Drives mount in the chamber behind the motherboard tray.

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Dust filter—1 × removable bottom dust tray Lian Li