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Lian Li · Mini-Tower · Mesh

Lian Li A4-H2O

Mini-ITX · Black · USB-C

Quality
42
Quality / price
26
Max GPU
322 mm
Amazon
$148
Lian Li A4-H2O
View Lian Li A4-H2O Gallery in high resolution
$148
Not currently available Updated Aug 21, 2026 Prime FBA
Overall quality42.0
Quality / price25.5
Cooling support2
$148 on Amazon Case table Compare this case

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Written analysis

Lian Li A4-H2O at a glance

The Lian Li A4-H2O is a Mini-Tower chassis with a mesh side panel profile. Supported boards: Mini-ITX. Primary materials are listed as steel and aluminium alloy.

Overall quality is 42.0, summing compatibility, cooling, storage, build quality, and connectivity. Max GPU length is 322 mm. Max CPU cooler height is 55 mm. Largest radiator support is listed at 240 mm.

Best fit: Airflow-focused builds where intake mesh and thermals matter more than a solid or glass aesthetic.

Cooling and front I/O

Front ports: 1x USB 3.2 Gen2 Type-C 1x USB 3.0 1x Headphone 1x Microphone. USB-C is present on the front I/O. Dust filters: No.

Current value

At $148, quality / price is 25.5. Compare nearby cases of the same form factor below; clearance and panel type can outweigh a small quality gap.

Chassis data

Full specifications

Construction, clearances, cooling, storage, front I/O, and quality metrics in one technical sheet.

General

Manufacturer
Lian Li
Case
Lian Li A4-H2O
Form factor
Mini-Tower
Side panel
Mesh
Launch price
—
Amazon price
$148
Amazon availability
Not currently available
Price updated
Aug 21, 2026

Construction

Material
steel and aluminium alloy
Color
Black
Side panel detail
mesh
Dimensions
326mm x 140mm x 244mm
Weight
—
PSU shroud
Yes
RGB lighting
No

Quality & value

Overall quality
42.0
Compatibility
10
Cooling support
2
Storage score
4
Build quality
16
Connectivity
10
Quality / price
25.5

Compatibility / clearances

Motherboard sizes
Mini-ITX
Max GPU length
322 mm
Max cooler height
55 mm
Max PSU length
—
PSU form factor
SFX
PSU included
No

Cooling

Max radiator
240 mm
Fan support
Front Fans: N/A Rear Fans: N/A Top Fans: 2x 120 (optional) Bottom Fans: N/A Side Fans: N/A
Radiator support
Front Radiator: N/A Rear Radiator: N/A Top Radiator: 240 mm Bottom Radiator: N/A Side Radiator: N/A
Pre-installed fans
Not specified
Dust filters
No

Storage & I/O

Drive bays
1x Internal 2.5"
Expansion slots
—
Front ports
1x USB 3.2 Gen2 Type-C 1x USB 3.0 1x Headphone 1x Microphone
USB-C
Listed

Additional information

Also listed as
A4-H2O Small Case

Amazon

Price history

Nearby quality

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Discussion

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Vendor copy

Amazon listing details

Marketplace feature text kept for reference. Structured specifications above are the source for scores and comparisons.

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: Mounts the GPU behind the motherboard to maximize space and airflow. Removable front panel creates a wide opening for easy GPU installation, supporting triple-slot graphics cards up to 322mm, with full mesh panels on all sides for direct cooling.

Easy AIO Installation: A removable top bracket simplifies the installation of radiators up to 240mm in length, accommodating a fan-radiator combination with a thickness of up to 55mm for efficient cooling.

Compatibility: Designed to support both SFX and SFX-L power supplies, the case includes a pre-routed power cord extension to prevent interference with other components, streamlining the installation process.

Collaboration with DAN Cases: The A4-H2O is a collaborative project with Daniel Hansen of DAN Cases.

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