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- The Lian Li A4-H2O X4 Mini-ITX PC Case suits compact gaming and workstation builds that need room for a full-length graphics card.
- Key specifications include an 11L volume, a 326 x 140 x 244 mm frame, a 322 mm maximum GPU length, a 240 mm radiator fit and a PCIe 4.0 riser.
- For Black Friday 2026, compare black and silver listings, PCIe 4.0 riser inclusion, retailer return terms, bundle contents and stock.
- The Lian Li A4-H2O X4 is a strong small-form-factor choice when its component limits fit your build and its Black Friday listing offers good value.
- The Lian Li A4-H2O X4 Mini-ITX PC Case packs a complete Mini-ITX system into an 11L chassis.
- A PCIe 4.0 riser and support for graphics cards up to 322 mm long make the case suitable for many high-performance compact builds.
- The 240 mm radiator allowance offers liquid-cooling flexibility, while the 55 mm CPU-cooler limit restricts air-cooling choices.
- Check GPU thickness, radiator-and-fan clearance, PSU format and included accessories before ordering.
- Black Friday 2026 shoppers should compare retailer terms, color, bundle details and stock—not just the headline offer.
The Lian Li A4-H2O X4 Mini-ITX PC Case is an 11L small-form-factor chassis designed to fit a powerful graphics card and a 240 mm liquid-cooling setup. I researched and compared its specifications, reviews and owner feedback to identify the deal details that matter most for a Black Friday 2026 purchase.
The compact layout asks builders to plan carefully: the case uses a Mini-ITX motherboard and SFX or SFX-L power supply, while CPU-cooler height tops out at 55 mm. My pick for most people is the X4 version when a PCIe 4.0 riser, a 322 mm GPU limit and a tidy footprint match the planned build. Check component dimensions before buying.
How We Picked
- Compared the case’s dimensions, volume, motherboard compatibility and power-supply support against its compact-build purpose.
- Reviewed graphics-card length and thickness limits alongside CPU-cooler and 240 mm radiator clearances.
- Considered the included PCIe 4.0 riser, color availability and retailer listing details that affect overall value.
- Prioritized practical buyer feedback about assembly planning, cable routing, cooling choices and fit verification.
Our Verdict
#1 · Top pick
Lian Li A4-H2O X4 Mini-ITX PC Case
The Lian Li A4-H2O X4 Mini-ITX PC Case is a well-equipped 11L enclosure for builders who want a compact system with support for a full-length GPU and 240 mm radiator. The Lian Li A4-H2O X4 Mini-ITX PC Case's tight clearances reward careful part selection.
Best for: Compact gaming PCs with a Mini-ITX motherboard and carefully measured components
- Case volume
- 11L
- Dimensions
- 326 x 140 x 244 mm
- Maximum GPU length
- 322 mm
- GPU thickness
- Up to 3 slots
- Radiator support
- 240 mm; 55 mm combined radiator-and-fan clearance
- Riser and platform
- PCIe 4.0 riser; Mini-ITX motherboard; SFX or SFX-L PSU
- Compact 11L footprint
- PCIe 4.0 riser included with the X4 version
- Fits graphics cards up to 322 mm long and 3 slots thick
- Supports a 240 mm radiator
- 55 mm CPU-cooler height limit narrows air-cooling choices
- Tight component clearances call for detailed measurements before purchase
Is the Lian Li A4-H2O X4 Mini-ITX PC Case worth buying on Black Friday 2026?
The Lian Li A4-H2O X4 Mini-ITX PC Case is worth considering if an 11L footprint, a 322 mm GPU limit and a PCIe 4.0 riser suit your build. Compare the exact listing, included accessories and return terms, then verify every component measurement.
See today’s Black Friday price on Amazon
What makes the Lian Li A4-H2O X4 a compact-build option?
The Lian Li A4-H2O X4 Mini-ITX PC Case fits a Mini-ITX system into an 11L enclosure measuring 326 x 140 x 244 mm. Its sandwich-style layout places the graphics card and core system components in separate areas, using the space efficiently without turning the build into a conventional tower.
That small footprint comes with clear component limits. The case accepts a graphics card up to 322 mm long and up to 3 slots thick, plus an SFX or SFX-L power supply. The X4 model includes a PCIe 4.0 riser, which connects the graphics card to the motherboard in the compact layout.
The Lian Li A4-H2O X4 is best suited to builders who value desk space and are willing to map out a parts list before assembly. Confirm the exact GPU dimensions, power connector position and PSU length before adding the case to your Black Friday basket.
Will a graphics card fit in the Lian Li A4-H2O X4?
The Lian Li A4-H2O X4 Mini-ITX PC Case supports a graphics card up to 322 mm long and 3 slots thick, but buyers should verify the exact card dimensions rather than relying on a model family name. Cooler shrouds, power connectors and cable bends all affect the space needed inside a compact case.
Start with the graphics-card maker’s length, height and thickness figures. Then compare those measurements with the case’s stated limits and check where the card’s power connectors sit. A card that meets the length limit still needs room for its power cable and airflow, so leave practical clearance rather than treating the maximum as a target.
The included PCIe 4.0 riser is a useful part of the X4 package, but the riser does not make an oversized GPU fit. Save the card’s exact product dimensions alongside the case specification before checkout. Skip it if you need unusually large GPU dimensions and cannot confirm clearance.
What cooling fits in the Lian Li A4-H2O X4?
The Lian Li A4-H2O X4 Mini-ITX PC Case supports a 240 mm radiator with up to 55 mm of combined radiator-and-fan thickness, while the maximum CPU air-cooler height is 55 mm. Those figures give builders a clear starting point for matching cooling hardware to the enclosure.
A 240 mm liquid-cooling setup makes sense for buyers who want more CPU cooling capacity in a short chassis, but radiator dimensions are only part of the fit check. Confirm hose routing, fan thickness and clearance around the motherboard and power supply. A radiator-and-fan stack that exceeds the stated limit will not suit the intended mounting space.
Air-cooling choices are more constrained because of the 55 mm height ceiling. Compare the cooler’s full height and fan position with the case layout, then read owner feedback for the exact combination of parts. Careful planning helps prevent a last-minute cooler swap and keeps the Black Friday purchase useful.
Which motherboard and power supply does the Lian Li A4-H2O X4 need?
The Lian Li A4-H2O X4 Mini-ITX PC Case is built for a Mini-ITX motherboard and an SFX or SFX-L power supply. Those form factors preserve room for the graphics card and cooling hardware inside the 11L chassis, so a standard ATX board or PSU is not the right fit.
Before buying, check the motherboard’s connector locations and the power supply’s full dimensions. Modular cable choices also matter in a tight build: use the cables supplied for the exact PSU model, and plan routing around the GPU and radiator area. Owners often point out that organization during the build has a direct effect on access and airflow.
The Lian Li A4-H2O X4 does not replace the need to balance system power needs with physical fit. Confirm PSU capacity for the processor and graphics card, then verify that its format and length match the case. A compact-compatible part list is more useful than selecting each component in isolation.
What should Black Friday 2026 buyers check on the Lian Li A4-H2O X4?
The Lian Li A4-H2O X4 Mini-ITX PC Case Black Friday 2026 listing is worth comparing by color, included PCIe 4.0 riser, retailer terms, bundle contents and stock. A low headline alone does not show whether the listing includes the expected case version or the accessories your build needs.
Check that the product page names the X4 model, since the riser specification is an important distinction for a modern graphics-card build. Review product photos and the box contents, and compare black and silver finishes if both suit your setup. Note the seller, shipping details, return window and warranty information before placing an order.
Bundles deserve a close look when they include parts you already planned to buy, but a bundle adds value only when every item fits your build. Keep a short checklist of case version, color, riser, PSU type and component clearance. Saving the listing details makes comparisons faster as holiday stock changes.
Is the Lian Li A4-H2O X4 easy to build in?
The Lian Li A4-H2O X4 Mini-ITX PC Case is easier to plan than to improvise in, because its 11L layout and component clearances leave little room for mismatched parts. Buyers who map out the GPU, radiator, cooler, motherboard and PSU before assembly can avoid fit surprises.
Read the build order in the case documentation and prepare the components before installation. Compact builds benefit from measured cable lengths, deliberate cable routing and a clear plan for radiator hoses. Check owner reports for the exact combination you intend to use, since one configuration’s ease of assembly does not guarantee another will have identical clearance.
The Lian Li A4-H2O X4 offers a neat result for a small desk setup, but it is not the right choice for shoppers who want roomy access or frequent component changes. For a first small-form-factor build, prioritize measured parts and a patient assembly plan. That approach makes the case’s compact layout more manageable.
Buying Guide
Confirm the exact X4 listing
The Lian Li A4-H2O X4 Mini-ITX PC Case listing should identify the X4 version and its PCIe 4.0 riser. Check the product name, included accessories and seller information before ordering, especially when search results display multiple A4-H2O versions.
Measure every major component
The Lian Li A4-H2O X4 Mini-ITX PC Case has an 11L interior, a 322 mm GPU length limit and a 55 mm CPU-cooler height limit. Compare exact measurements for the graphics card, power supply and cooler, including connector and cable clearance.
Compare colors, bundles and retailer terms
The Lian Li A4-H2O X4 Mini-ITX PC Case can appear in different finishes and listing bundles. Compare black and silver options, included parts, return policies, shipping details and warranty coverage so the selected listing matches your build and preferences.
Check stock and listing details before checkout
The Lian Li A4-H2O X4 Mini-ITX PC Case can attract compact-build shoppers during Black Friday 2026, so review current stock and seller details before checkout. Recheck the model name, case color and box contents at the final confirmation step.
Alternatives to Consider
- Cooler Master NR200P V2 Mini-ITX PC Case: Choose the Cooler Master NR200P V2 Mini-ITX PC Case if you prefer a larger enclosure with a different internal layout and more room to plan around cooling and assembly. Compare its dimensions and exact GPU clearances with the A4-H2O X4.
- Fractal Design Terra Mini-ITX PC Case: Choose the Fractal Design Terra Mini-ITX PC Case if a wood-accented exterior and adjustable internal divider better suit your desk and component plan. Check the resulting GPU and CPU-cooler clearance for your selected parts.
- FormD T1 Mini-ITX PC Case: Choose the FormD T1 Mini-ITX PC Case if you want another compact sandwich-layout option and are comfortable checking a more configuration-dependent fit. Compare the specific version, riser and included hardware against the Lian Li listing.
FAQ
What are the dimensions of the Lian Li A4-H2O X4 Mini-ITX PC Case?
The Lian Li A4-H2O X4 Mini-ITX PC Case measures 326 x 140 x 244 mm and has an 11L volume. Those compact dimensions suit a small desk setup, but they also make component planning important. Measure the GPU, PSU, cooler and radiator before buying.
What is the maximum GPU size for the Lian Li A4-H2O X4 Mini-ITX PC Case?
The Lian Li A4-H2O X4 Mini-ITX PC Case supports graphics cards up to 322 mm long and 3 slots thick. Check the exact card dimensions, including the shroud and power connectors, because a card within the length limit still needs cable and airflow clearance.
Does the Lian Li A4-H2O X4 Mini-ITX PC Case include a riser cable?
The Lian Li A4-H2O X4 Mini-ITX PC Case includes a PCIe 4.0 riser for its compact graphics-card layout. Check the exact retailer listing and box contents before checkout, particularly if the listing uses shortened product names or groups multiple A4-H2O versions together.
What radiator size fits the Lian Li A4-H2O X4 Mini-ITX PC Case?
The Lian Li A4-H2O X4 Mini-ITX PC Case supports a 240 mm radiator with up to 55 mm of combined radiator-and-fan thickness. Verify the radiator, fans and hose routing as a complete assembly, then compare the dimensions with your motherboard and other planned parts.
What power supply works with the Lian Li A4-H2O X4 Mini-ITX PC Case?
The Lian Li A4-H2O X4 Mini-ITX PC Case is designed for SFX and SFX-L power supplies. Confirm the chosen unit’s full dimensions and cable layout, then check that its capacity suits the processor and graphics card. Standard ATX power supplies do not match this case’s intended format.
What should I look for in Lian Li A4-H2O X4 Black Friday deals?
For Lian Li A4-H2O X4 Black Friday 2026 deals, compare the X4 model name, PCIe 4.0 riser, color, box contents, seller, return terms and stock. Review bundle items against your parts list, and verify the GPU and cooling clearances before ordering.