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Dan Cases A4-H2O X4 Mini-ITX Case - Black

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(5/5) 1 review
Mini-ITX chassis, Steel frame, Mesh aluminium panelling, Supports triple slot GPUs, 240 AiO cooling, SFX/SFX-L support
£159.95 (incl. VAT)
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EAN 4718466011497

Celebrate the small form factor PC with the Lian Li x DAN Case A4-H2O Mini-ITX Case. With just 11L capacity, this PC case has an incredibly small footprint but an intelligent design, maximising hardware capacity. With three expansion slots, this case can accommodate a triple slot GPU, up to 322mm long, which connects to a Mini-ITX motherboard via the included PCIe 4.0 riser cable. Every panel is removable for ease of access, with many sporting a fine mesh for excellent ventilation. Additionally, improving the design of the previous A4-SFX, this model can accommodate a 240 AiO with the radiator in a dedicated chamber. Big power in a small chassis.

Lian Li x DAN Case A4-H2O Mini-ITX PC Case at a Glance:

  • Small form factor Mini-ITX PC case designed with DAN Case
  • SPCC steel frame with mesh aluminium panelling
  • Compatible with Mini-ITX motherboards and SFX/SFX-L power supplies
  • Clearance for a triple slot GPU up to 322mm long
  • Includes a PCIe 4.0 riser cable
  • Dedicated top chamber for 240mm AiO radiator, up to 55mm thick
  • All panels fully removable for ease of access and installation

Economic Footprint

The Lian Li x DAN Case A4-H2O is the ultimate celebration of the small form factor case. This Mini-ITX chassis has an incredibly small footprint, making it ideal for use as either a gaming PC or a console alternative. With its robust steel interior and sand-blasted aluminium panelling, this is a sleek case with a premium finish. At just 244mm tall and 140mm wide, this case effortlessly integrates within any gaming environment.

Sandwich Layout

To maximise on hardware, the Lian Li x DAN Case A4-H2O features an intelligent sandwich layout design. Each area is specifically designed to cater for hardware that goes beyond the expectation of the Mini-ITX form factor. This chassis can hold an SFX power supply as standard or, alternatively, the mounting bracket can be removed to accommodate for an SFX-L PSU. The motherboard is mounted on the left-hand side of the middle divider, with support for the Mini-ITX format only. Behind this, there is a dedicated area that allows for triple-slot graphics cards up to 322mm long.

A truly remarkable feat, the Lian Li x DAN Case A4-H2O does all this with space for a 240mm radiator as part of an AiO cooling loop, with a CPU cooler up to 55mm tall. Under the top panel, there is a fan bracket that can be removed and replaced with a 240mm radiator, up to 55mm thick. Unlike its predecessor, the A4-SFX, this case is fully capable of water cooling your high-end hardware.

Ease of Use

With so much going on in a small space, to make installation easier every panel on the Lian Li x DAN Case A4-H2O can be removed. This grants greater access to the interior, enabling you to manage cables and instal hardware with the greatest of ease. Additionally, the steel framework features an opening to aid in mounting longer GPUs. Upon the bottom panel, there is a mounting bracket for a 2.5” SSD, with ventilation placed beneath to prevent the hardware from overheating.

There is ample ventilation throughout the Lian Li x DAN Case A4-H2O thanks to the fine mesh featured on the side and top panels. Promoting outstanding natural airflow, this will work perfectly with the AiO cooler to keep your gaming PC at optimum temperature.


The Lian Li x DAN Case A4-H2O comes in two colours. This model is black, with the other choice being silver. What’s more, as the GPU can only be mounted vertically a PCIe riser cable is included with the case. Choose between the industry standard PCIe 3.0 or next-gen PCIe 4.0, depending on the needs of your graphics card. This model comes with the PCIe 4.0 riser cable that can be discretely tucked behind the motherboard when installing.


In a stylish recess, the I/O panel rests on the left-hand side of the Lian Li x DAN Case A4-H20. At the top is a premium-grade power button, whilst the bottom plays host to one USB 3.1 Type C, one USB 3.0 Type A, and two jacks dedicated to microphones and audio.

Lian Li x DAN Case A4-H2O Mini-ITX PC Case Specifications:

BrandLian Li
ModelDAN Case A4-H2O Mini-ITX PC Case
Model NumberA4H2OX4
Matte black interior
Riser Cable GenerationPCIe 4.0
SPCC steel
Fan SupportTop: 2 x 120mm
Radiator SupportTop: 1 x 240mm
55mm maximum thickness
PSU SupportSFX
GPU SupportUp to 322mm long
CPU Cooler ClearanceUp to 55mm tall
Drive Support1 x 2.5” SSD
Expansion Slots3
I/O Panel1 x Power button
1 x USB 3.1 Type C
1 x USB 3.0 Type A
1 x Microphone jack
1 x HD audio jack
Dimensions326mm x 140mm x 244mm
D x W x H
Warranty1 year
Expansion Slots
Expansion slots / PCI slots 3
Drive Bays
2.5 inch internal drive bay 1
Radiator Support
Max. Radiator Compatibility 1x Dual (240 mm)
Internal Dimensions
Max. CPU Cooler Height 55 mm
Max. GPU Lenght 322 mm
Inner Volume 11 l
Primary Colour Black
Colour Finish Matt
Lighting No
Case Features
I/O position Side
Side panel with mesh
Power Supply
PSU included No
PSU format SFX-L, SFX
Power Supply Position internal
Motherboard Support
Compatible motherboard formats Mini-ITX
Max. Motherboard Format Mini-ITX
Case Type Mini Case
Materials Aluminium, SPCC (steel)
Width 140 mm
Depth 326 mm
Height 244 mm
Weight 2.9 kg
External Ports
USB 3.1 (external) Type C 1
USB 3.0 (external) Type A 1
Audio outputs & inputs 1x output + 1x input (3.5 mm jack, 3-pin, TRS)
Fan Support
120 mm fans 2
1 year
Add a Review

Would recommend

by Daniel star star star star star

High quality material. building in it is nice and easy with plenty of access points. Cable management can be a bit tight in areas such as near the top AIO fans but this is expected with SFF. Would recommend if you're looking for a small case with plenty of room for large GPU's

Reviews are from unverified purchasers. Reviews which are factually incorrect, not related to the product, contain spam, harm, hate or profanity are not published.

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£159.95 (incl. VAT)
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