Lian Li A4-H2O Silver miniITX Steel Mesh PC Gaming Case
Lian Li A4-H2O X4, Silver, miniITX Small Form Factor Chassis, Mesh Panelling, USB 3.0, USB 3.1 Type-C, PCIe 4.0 Riser
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A4-H2O Steel Mesh SFF mini-ITX Chassis from Lian Li
Pure Minimalism The A4-H2O is an 11-litre Mini-ITX case created in collaboration between Lian Li and DAN Cases. Building on the sandwich layout of the original DAN A4-SFX, it offers a compact design with enhanced hardware compatibility, including support for triple-slot GPUs and 240mm AIO water cooling solutions. Its modular design and removable bottom panel make installation straightforward, offering practicality for both cable management and component upgrades. With support for SFX and SFX-L PSUs, the A4-H2O delivers the versatility required for high-performance builds, all within a minimalist footprint tailored for modern desktops.
Black Variant Silver Variant
Small Form Factor Glory
11L SFF Design The Lian Li A4-H2O delivers an 11-litre minimalist design that combines smart use of space with impressive hardware support. Its sandwich layout accommodates triple-slot GPUs, SFX or SFX-L power supplies, and a 240mm AIO for compact yet capable cooling. The removable bottom panel simplifies assembly and upgrades, while PCIe 3.0 or 4.0 options ensure compatibility with modern builds.
Mini-ITX Form Factor
Sandwich Layout
240mm AIO Support
Triple Slot GPU Support
SFX/SFX-L PSU Support
In Collaboration with DAN Cases
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The A4-H2O is the result of a collaboration between Lian Li and Dan Cases, bringing together the expertise of two renowned brands. Dan Cases is known for its innovative approach to compact, high-performance case design, where efficiency and simplicity are key. Their influence in the a4-H2O is evident in its refined modularity and space utilisation, offering a unique blend of precision and flexibility. This partnership is significant because it merges Lian Li’s reputation for exceptional build quality with Dan Cases’ minimalist, highly functional designs. The outcome is a case that doesn’t just look good—it optimises every inch, offering a new standard of performance in a compact form.
Sandwich Layout
everything in its right placeThe sandwich layout of the A4-H2O makes room for a triple-slot GPU, fitting comfortably within the compact case. With the GPU placed behind the motherboard, there’s ample space for a 240mm radiator at the top. The bottom, side, and top mesh panels enhance airflow, drawing in fresh air directly to cool the components.
Vertical GPU, Maximum Impact
Included Gen4 Riser CableThe A4-H2O features a PCIe Gen 4 riser cable, positioning the GPU vertically behind the motherboard for a streamlined layout. Supporting transfer speeds of up to 16GT/s, it delivers the performance needed for modern graphics cards while remaining backward-compatible with PCIe Gen 3, offering versatility for a range of configurations.
Triple-Slot GPU SupportWith support for triple-slot GPUs up to 322mm, the A4-H2O caters to demanding builds. The removable front panel provides a wide access point, making the installation of larger GPUs straightforward and hassle-free, a valuable feature for compact setups requiring powerful components.
Dual-Slot Card CoolingDual-slot GPUs gain improved cooling efficiency through added standoffs, aligning the card closer to the side panel. This strategic placement enables direct airflow for intake or exhaust, helping maintain performance and reliability in compact builds under heavy loads.
Power-Packed DesignBalancing cutting-edge performance with thoughtful design, the A4-H2O offers exceptional GPU compatibility and advanced cooling considerations. Its innovative layout and flexible support make it the perfect choice for builders seeking something different.
Cooling Support
Airflow From AboveThe A4-H2O supports a 240mm AIO cooler (up to 55mm thick) or dual 120mm fans, offering flexible cooling options. Its mesh-centric design enhances airflow, promoting better ambient cooling by directing fresh air over components and allowing warm air to escape easily. This creates a more stable system in a compact space.
2 X 120MMFan Support
1X 240MMRadiator Support
Removable Bottom Panel
EASIER CABLE MANAGEMENTThe removable bottom panel simplifies access to internal routing points, making cable management less restrictive. By providing direct entry to otherwise hard-to-reach areas, it accommodates precise alignment and secure fastening of cables. In a Mini-ITX case, where space constraints can complicate assembly, this feature helps maintain efficient system performance by reducing clutter.
2.5" SSD SUPPORTThis panel also incorporates versatile mounting support for 2.5" SSDs, ensuring discreet and secure storage placement. With the ability to handle high-capacity drives, it allows users to maximise storage potential in a confined space. By integrating this functionality, the design balances compactness with practicality, keeping storage out of the way of critical airflow paths and other core components.
Always Within Reach
Subtle I/O PanelThe A4-H2O offers practical and accessible I/O connectivity right on the front, with a smartly designed recessed cutout. It features a USB 3.0 Type-A port, a USB 3.1 Type-C port, and essential audio ports, including Mic and HD Audio. The USB 3.1 Type-C port supports fast data transfer, while the USB 3.0 Type-A is perfect for connecting peripherals. Completing the front I/O is a premium-grade power button, ensuring easy access to your system's core functions.
