Lian-Li A4-H2O Silver Case

An 11L small form factor case for compact Mini-ITX desktop builds

Designed with a sandwich layout, PCIe 5.0 riser cable and support for 240mm liquid cooling

A Dan Cases Collaboration

A4-H2O is a collaboration with Daniel Hansen from DAN Cases

It updates the popular DAN A4-SFX concept with added support for water cooling

The case is manufactured and sold by LIAN LI

11L Small Form Factor Design

A4-H2O uses a compact 11L form factor for space-saving Mini-ITX builds

It is smaller than many game consoles and fits well in compact desktop or entertainment setups

The silver aluminum exterior gives the case a clean minimalist look

Sandwich Layout

The sandwich layout places the graphics card behind the motherboard

This helps fit powerful hardware inside a compact chassis

The case supports triple-slot graphics cards up to 322mm long

Removing the front panel provides a wide opening for easier installation of larger graphics cards

PCIe 5.0 Riser Cable

A4-H2O includes a PCIe 5.0 riser cable for vertical GPU installation

The riser cable supports up to 32 GT/s

It is backward compatible with earlier PCIe generations

240mm Radiator Support

The top compartment supports a 240mm radiator

A removable top bracket helps make AIO installation easier

The radiator and fan combination can be up to 55mm thick

Fully Removable Panels

The front, side, top and bottom panels can be removed for easier installation and cable management

The top, side, bottom and rear panels use fine mesh ventilation

This allows fresh air to reach the internal components directly

PSU and Storage Support

The case supports SFX and SFX-L power supplies

A pre-routed power cord extension is included

The removable bottom panel can hold one 2.5″ SSD

The removable bottom panel also gives additional access for cable management

I/O and Compatibility

The side I/O includes USB 3.0 Type-A, USB 3.1 Type-C, Mic and HD Audio ports

The case supports Mini-ITX motherboards

CPU cooler clearance is up to 55mm