LIAN LI A4-H2O 11-Liter Mini-ITX SFF PC Case with PCIe 5.0 Riser – Black – G99.A4H2OX5.00

A Tribute to Small Form Factor Innovation

The LIAN LI A4-H2O represents the ultimate evolution in ultra-compact PC chassis engineering. Crafted in a special collaboration with Daniel Hansen from DAN Cases, this stunning 11-liter small form factor enclosure serves as a highly refined update to the legendary DAN A4-SFX concept. Built to continue the legacy of minimalist, space-saving design, the A4-H2O radically improves hardware compatibility to meet the demands of modern gamers and creators. Despite its incredibly small footprint—which easily undercuts most modern gaming consoles in size—this chassis brings seamless support for all-in-one water cooling solutions, streamlining your entire ITX installation process.

Minimalist Design for Any Environment

Elegance meets pure functionality with the A4-H2O’s premium construction. Forged with a premium anodized aluminum exterior and a sturdy SPCC steel interior, the case presents a beautiful minimalist aesthetic that demands attention. The finely machined mesh ventilation surrounds almost every side of the enclosure, ensuring internal components breathe without relying on aggressively stylized cutouts. Available in sleek matte black or an eye-catching silver finish, the case integrates seamlessly into any living room entertainment center or minimalist desktop workspace. Its remarkably small footprint means you get to enjoy a spacious, clutter-free setup without sacrificing high-end computing power.

Intelligent Sandwich Layout and GPU Support

To squeeze maximum performance into an 11-liter frame, the A4-H2O employs a highly optimized internal sandwich layout. This brilliant structural design physically separates the heat zones by mounting the graphics card vertically behind the Mini-ITX motherboard. Doing so creates massive interior real estate, allowing builders to slot in colossal triple-slot graphics cards up to 322mm in length. Included out-of-the-box is a cutting-edge PCIe 5.0 riser cable capable of 32 GT/s speeds, providing limitless bandwidth for the latest generation of GPUs while remaining fully backward compatible with earlier PCIe iterations. Furthermore, specialized extra standoffs are included to push standard two-slot GPUs closer to the side panel, optimizing fresh air intake and exhaust directly out of the chassis.

Uncompromised Cooling and Modular Accessibility

Thermal throttling is a thing of the past with the A4-H2O’s uncompromised approach to airflow. The top compartment utilizes a cleverly designed removable bracket that accommodates a 240mm AIO liquid cooler radiator up to 55mm thick. Paired with fine mesh panels covering the top, sides, and back, your hardware remains saturated in cool, fresh air intake. Building inside this compact powerhouse is remarkably stress-free thanks to fully removable front, top, side, and bottom panels. This 360-degree accessibility allows builders to easily route cables, install bulky hardware, and perform maintenance with absolute freedom. The removable bottom panel also houses the dedicated mounting zone for a 2.5-inch SSD, keeping your storage drive completely out of the way of your main cable routes.

Premium Connectivity and Power Solutions

Powering your elite SFF rig is made simple through the included removable mounting bracket, natively supporting both SFX and SFX-L power supplies. LIAN LI generously pre-routes a high-quality power cord extension inside the frame, guaranteeing interference-free hardware installation. Thoughtful design extends perfectly to external connectivity as well. Neatly tucked inside a recessed cutout on the left side of the chassis sits a modern, fully-equipped front I/O panel. This connectivity hub features a premium-grade tactile power button, dedicated Mic and HD-Audio ports, a high-speed USB 3.0 Type-A port, and a reversible USB 3.1 Type-C port, delivering rapid data transfers and peripheral compatibility precisely within arm’s reach.