Lian Li A3-mATX White Mini Tower Case

The Lian Li A3-mATX White Mini Tower Case (model G99-A3W-IN) is a compact, mesh-forward micro form factor chassis developed in collaboration with DAN Cases designer Daniel Hansen and manufactured by Lian Li. Built for builders who refuse to sacrifice component headroom in a small package, the A3-mATX packs serious expandability into a modest 26.3-litre steel enclosure finished in clean white. Three sides of the chassis feature minimalist steel mesh panels, promoting strong passive and active airflow throughout the build. All exterior panels are removable without tools, and the modular bracket system simplifies both initial installation and future upgrades. A bottom dust filter is included to help maintain interior cleanliness over time. One of the A3-mATX's standout traits is its flexible PSU bracket, which supports ATX, SFX, and SFX-L power supplies up to 220mm in length, as well as Lian Li's own Edge PSU format, with the option to mount sideways or front-facing. This repositionable bracket is central to the case's ability to accommodate a wide variety of component configurations within such a tight footprint. Cooling options are generous for the chassis size. Up to ten 120mm fans can be installed across the top (3×120mm), side (3×120mm or 2×140mm), bottom (3×120mm), and rear (1×120mm) positions. Radiator support extends to 360mm at the top and side positions, and 240mm at the bottom (expandable to 360mm with fans mounted below the radiator), making AIO liquid cooling a practical option. GPU builders are well served by a 415mm maximum graphics card clearance, while CPU cooler builders can fit air coolers up to 165mm in height. The front I/O panel includes two USB 3.0 Type-A ports, one USB 3.1 Type-C port, a microphone jack, HD audio output, and a power button — everything a modern workstation or gaming rig requires. Storage is handled via two 2.5-inch SSD trays plus one additional bay that accepts either a 2.5-inch SSD or a 3.5-inch HDD, and four expansion slots are available for multi-GPU or full-length card setups. — Verified Specifications — Model: G99-A3W-IN | Color: White | Case Type: Micro Form Factor (MFF) | Dimensions: 443mm (D) × 194mm (W) × 321.5mm (H) with feet; 306mm (H) without feet | Capacity: 26.3L | Material: Steel | Motherboard Support: M-ATX, Mini-ITX | PSU Support: ATX / SFX / SFX-L (max 220mm) / Lian Li Edge | Fan Support: Top 3×120mm, Side 3×120mm or 2×140mm, Bottom 3×120mm, Rear 1×120mm (10 fans total) | Radiator Support: Top 360/240mm, Side 360/280/240mm, Bottom 240mm (360mm with bottom fan) | GPU Clearance: 415mm | CPU Cooler Clearance: 165mm | Drive Bays: 2×2.5″ SSD trays + 1×2.5″ SSD or 1×3.5″ HDD | Expansion Slots: 4 | I/O: 2×USB 3.0 Type-A, 1×USB 3.1 Type-C, Mic, HD Audio, Power Button | Dust Filter: 1× Bottom | Warranty: 1 Year