Lian Li - A4-H2OX5 Mini-ITX PC Case, Triple-Slot Mount GPU, Aluminum Exterior & SPCC Steel Interior, 240mm AIO (A4-H2OX5) - Black
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About this product
The A4-H2O PCIe 5.0 is an 11-liter small-form-factor case, and a collaboration project with DAN Cases. Based on the original DAN A4-SFX case sandwich layout concept, the A4-H2O continues the minimalist, compact form factor, with improved hardware compatibility (including AIO water cooling) and simplified installation. The 11-liter compact case supports a 240 AIO and a triple-slot GPU up to 322mm long. With a minimalist design featuring anodized and sandblasted aluminum panels. Previously only available with PCIe 3.0 or 4.0 riser cables, the A4-H20 is now updated with a PCIe 5.0 riser cable.
Compact 11-Liter Design
The A4-H2O is one of the smallest cases on the market at just 11 liters, yet it supports a triple-slot GPU and accommodates 240mm AIO water cooling, striking the perfect balance between size and performance.
Elegant Minimalist Aesthetic
Featuring a premium aluminum exterior available in black or silver, the A4-H2O showcases a minimalist design with extensive ventilation, making it a stylish addition to any living or entertainment space.
Innovative Sandwich Layout Design
This unique sandwich layout accommodates a triple-slot GPU, mounted behind the motherboard using a PCIe Gen. 5 riser cable. Mesh panels on the bottom, sides, and top ensure optimal airflow for direct cooling. Removable bracket supports SFX and SFX-L power supplies, with a pre-routed power cord extension to minimize hardware interference.
Updated PCIe 5.0 Riser Cable
The A4-H2O now includes a 240mm long PCIe Gen.5 riser cable, to vertically mount modern GPUs behind the motherboard. The PCIe 5.0 riser cable delivers up to 32Gb/s bandwidth, which is twice the speed of PCIe 4.0. It supports PCIe 2.0 to 4.0 devices and ensures stable signal transmission with consistently high performance across wide range of GPUs.
Collaboration with DAN Cases
The A4-H2O, is an update to the popular DAN A4-SFX case with added water cooling support. This is a special collaboration with Daniel Hansen from Dan Cases. The A4-H2O is manufactured and sold by LIAN LI.
- Motherboard Form FactorMini-ITXMaximum GPU Length322 millimetersProduct Height9.61 inchesProduct Width5.51 inchesProduct Depth12.83 inchesWindow Panel(s)None
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The A4-H2O PCIe 5.0 is an 11-liter small-form-factor case, and a collaboration project with DAN Cases. Based on the original DAN A4-SFX case sandwich layout concept, the A4-H2O continues the minimalist, compact form factor, with improved hardware compatibility (including AIO water cooling) and simplified installation. The 11-liter compact case supports a 240 AIO and a triple-slot GPU up to 322mm long. With a minimalist design featuring anodized and sandblasted aluminum panels. Previously only available with PCIe 3.0 or 4.0 riser cables, the A4-H20 is now updated with a PCIe 5.0 riser cable.

The A4-H2O PCIe 5.0 is an 11-liter small-form-factor case, and a collaboration project with DAN Cases. Based on the original DAN A4-SFX case sandwich layout concept, the A4-H2O continues the minimalist, compact form factor, with improved hardware compatibility (including AIO water cooling) and simplified installation. The 11-liter compact case supports a 240 AIO and a triple-slot GPU up to 322mm long. With a minimalist design featuring anodized and sandblasted aluminum panels. Previously only available with PCIe 3.0 or 4.0 riser cables, the A4-H20 is now updated with a PCIe 5.0 riser cable.

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