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Silver Mini-ITX case with aluminum panels and perforated sides

Lian Li

Lian Li A4-H2OA5 Mini-ITX PC Case Silver

SKU CH-V20P-7ZGX4 MPN A4-H2OA5

An 11-liter Mini-ITX case with a sandwich layout that fits a triple-slot GPU up to 322 mm, a 240 mm radiator, and an SFX or SFX-L power supply

  • Max graphics card length322 mm
  • Supported motherboard sizesMini-ITX
  • Dust filteringRemovable bottom dust tray x 1
  • Front panel portsPower Button x1 USB 3.1 Type C x1 Mic x1 HD Audio x1 USB 3.0
  • Fan mounting optionsTop: 120 mm x 2
  • Radiator supportTop: 240 mm (55 mm max total thickness with fans)

Color Silver

  • 11-liter volume fits triple-slot GPU and 240 mm AIO
  • PCIe 5.0 riser cable enables sandwich GPU mounting
  • Aluminum exterior with near-all-side ventilation
  • Removable bottom dust tray simplifies cleaning
  • Front I/O includes USB 3.1 Type-C and USB 3.0 Type-A

Compact 11-Litre Mini-ITX Chassis

The Lian Li A4-H2OA5 is an 11-litre sandwich-layout case built for Mini-ITX motherboards. It fits a triple-slot graphics card up to 322 mm long behind the board using an included PCIe 5.0 riser cable. The design targets builders who want high-end components in a volume smaller than most consoles. It is not suited for users who need full-size ATX boards or multiple expansion cards.

Top 240 mm Radiator Support

Two 120 mm fan mounts on the top panel accept a 240 mm radiator with a maximum combined thickness of 55 mm including fans. The aluminium exterior and SPCC steel interior provide ventilation on most sides while keeping the footprint minimal. A removable bottom dust tray simplifies cleaning. CPU cooler height is limited to 55 mm, so tower coolers cannot be used.

Sustained Load Thermal Behaviour

Under continuous load the 240 mm AIO can exhaust heat directly through the top panel, aided by the open sandwich layout that separates the GPU chamber from the motherboard. The 55 mm total radiator-plus-fan limit constrains radiator thickness, which may affect coolant temperatures during extended sessions. The SFX or SFX-L power supply sits adjacent to the GPU, so cable routing and airflow around the PSU become critical for stable operation.

How it compares

Measured against everything we stock in Tower & Desktop PC Cases, at today’s prices. Recalculated every night.

Price $114.99
Pricier than about 58% of the 1,468 comparable items (median $100.99).
Max graphics card length 322 mm
Lower than about 88% of the 894 comparable items (median 400 mm).

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Specifications

Product
Product lineA4
Model nameA4-H2OA5
Product typeMini-ITX
Product colorSilver
Ports & slots
Front panel portsPower Button x1
USB 3.1 Type C x1
Mic x1
HD Audio x1
USB 3.0 Type A x1
Size & build
Max graphics card length322 mm
Dust filteringRemovable bottom dust tray x 1
Fan mounting optionsTop: 120 mm x 2
Shipping weight3.45 kg
Package size387 × 305 × 193 mm
Compatibility
Supported motherboard sizesMini-ITX
Radiator supportTop: 240 mm (55 mm max total thickness with fans)
CPU cooler height limit55 mm

Other versions of this model

1 more in the same range

Questions about this item

How do I install the PCIe 5.0 riser cable in the sandwich layout without bending it too sharply?

Route the PCIe 5.0 riser cable behind the motherboard tray first, then connect it to the GPU slot before securing the triple-slot graphics card; the tight 11-liter volume leaves little slack, so avoid kinking the cable during the final GPU mount.

What maintenance will the removable bottom dust tray need over time?

Slide out the bottom dust tray every few months, rinse or vacuum the mesh, and reinstall it; the tray is the only filter, so keeping it clean maintains airflow to the SFX power supply and GPU intake.

What thermal limit appears first when running a 240 mm radiator with two 120 mm fans under sustained load?

The 55 mm maximum total thickness for radiator plus fans caps cooling capacity; exceeding it prevents the top panel from closing, so the thickness limit is reached before fan speed or radiator surface area becomes the bottleneck.

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