Lian Li O11 Air Mini / Lian Li LANCOOL II MESH Performance

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.

Lian Li LANCOOL II MESH Performance: LANCOOL II MESH Performance (black; the Performance-X version adds USB-C). The LANCOOL II MESH RGB with RGB fans, the white colour and the glass-front LANCOOL II are separate versions; the LANCOOL III and 216 are different cases.

SpecificationLian Li O11 Air MiniLian Li LANCOOL II MESH Performance
Release year20212020
Size and materials400 (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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MotherboardE-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 card and vertical mountingUp 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 supplyCPU cooler up to 170 mm; ATX power supply up to 200 mm Lian Li—
Included fans2 × 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.

Lian Li		2 × 140 mm PWM at the front (600–1200 rpm, 60.56 CFM, 25.8 dB(A)); 1 × 120 mm PWM at the rear (600–1500 rpm, 54.6 CFM, 26.1 dB(A))

PWM fans are 4-pin fans whose speed can be controlled by the motherboard or the case controller.

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Fan supportTop 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 LiFront: 2 × 140 mm or 3 × 120 mm; top: 2 × 120 mm or 2 × 140 mm; top of PSU chamber: 2 × 120 mm

The built-in hub supports up to six 3- or 4-pin fans; the four-mode button selects fan speed.

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Radiator supportTop 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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Storage6 × 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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Front I/O2 × 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.

Lian Li		2 × USB 3.0; 1 × USB 3.1 Type-C; TRRS audio jack; fan speed button

The USB-C port is on the Performance-X version; other versions add it with a separately sold kit.

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Dust filter1 × removable bottom dust tray Lian Li—
Case type and motherboard—Mid-tower; E-ATX (under 280 mm wide), ATX, Micro-ATX, Mini-ITX Lian Li
Dimensions—478 × 229 × 494 mm (D × W × H) Lian Li
Materials—Steel; 4 mm tempered glass on both sides

The glass panels and PSU covers are hinged doors that close with magnets; the cable-side glass comes with covers that hide the cables.

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Radiator—Front (multi-way bracket): 360/280/240 mm; top: 240 mm (aligned to the left)

The multi-way bracket places a radiator closer to the motherboard or the front panel; Lian Li warns not to mount a 140/280 mm radiator on the inner side of the bracket.

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Component clearances—Graphics card 384 mm; CPU cooler 176 mm; PSU 210 mm; 7 expansion slots Lian Li
Drive bays—3 × 3.5″/2.5″ in the cage; 2 × 2.5″ behind the motherboard tray; 2 × 2.5″ behind the right flip panel; 2 × 2.5″ above the PSU chamber

There is room for up to 9 drives; the drive cage slides on a rail without tools.

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Dust filters—Magnetic top filter, tray-type bottom filter

No separate dust filter is listed for the mesh front panel.

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Optional kits—Vertical GPU kit (PCIe 3.0 riser); hot-swappable back plate; anti-sag GPU bracket

When using the PCIe 3.0 riser with a PCIe 4.0 motherboard and graphics card, the slot must be set to Gen 3 in the BIOS.

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