Lian Li A3-mATX / Lian Li O11 Vision Compact

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 Vision Compact: O11VPX black / O11VPW white

SpecificationLian Li A3-mATXLian Li O11 Vision Compact
Release year20242024
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 Li447.5 (D) × 287.5 (W) × 446.4 (H) mm; 57.4 L 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.

Lian Li		—
MotherboardM-ATX and ITX; 4 expansion slots Lian Li—
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.

Lian Li		Up to 408 mm long; removable anti-sag bracket for 278–408 mm cards Lian Li
CPU coolerUp to 165 mm tall Lian LiUp to 167 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.

Lian Li		ATX, up to 220 mm Lian Li
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 or 2 × 140 mm; side 3 × 120; bottom 3 × 120; rear 2 × 120 mm

With the mesh top up to 11 × 120 mm in total; in glass (Vision) mode up to 8 × 120 mm. The page lists no included fans.

Lian Li
Radiator supportTop: 360/240 mm; side: 360/280/240 mm; bottom: 240 mm (360 mm with fan at the bottom) Lian LiTop 240/280/360 mm; side 240/360 mm; bottom 240/360 mm

One radiator per position.

Lian Li
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 LiPower button (white backlight), 2 × USB 3.0, 1 × USB 3.1 Type-C, 1 × audio

The I/O sits in the case foot.

Lian Li
Dust filter and warrantyRemovable bottom dust filter; 1-year warranty Lian Li—
Models—O11VPX (black, tinted glass); O11VPW (white, clear glass)

The white version has white grommets, thumbscrews and brackets.

Lian Li
Case type—Dual-chamber tower; front and side glass, swappable glass or mesh top

In the dual-chamber layout the PSU and cables sit in a separate compartment behind the motherboard, leaving only components visible in the main chamber.

Lian Li
Materials—Steel, aluminium; 3.0 mm (top) and 4.0 mm (side and front) tempered glass Lian Li
Motherboard support—E-ATX (under 280 mm), ATX, Micro-ATX, Mini-ITX; back-connect ATX and E-ATX

Back-connect boards move power and fan headers to the rear of the board for a cleaner front view.

Lian Li
Expansion slots—6 + 1 Lian Li
Storage—2 × 2.5" behind the motherboard tray; 2 × 3.5"/2.5" in the drive cage; up to 2 × 2.5" on the cable bar Lian Li