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Lian Li A3-mATX-26.3L Micro Form Factor Chassis-Flexible Power Supply Installation-No Fans Included-Supports 360mm AIO-Modularity Design-For M-ATX and ITX Motherboard-DAN Collaboration-White (?A3W.US)
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AI Verdict
This 26.3L micro form factor chassis supports M-ATX/ITX motherboards and 415mm GPUs, designed for builders prioritizing compact size with extensive cooling options.
This 26.3L chassis is a strong fit for users aiming for a compact build that doesn't compromise on high-performance components, supporting 415mm GPUs and 360mm AIOs. Its modular design and extensive mesh panels cater to efficient cooling in a smaller footprint.
If you need more straightforward cable management or desire pre-installed cooling, look for cases with dedicated cable routing channels or included fans.
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Pros
- Accommodates GPUs up to 415mm long and 4 slots thick, allowing for high-end graphics cards in a compact build.
- Supports up to a 360mm AIO radiator on the top or side, providing significant cooling potential for a 26.3L chassis.
- Flexible power supply installation supports ATX, SFX, SFX-L, and LIAN LI Edge PSUs, mountable sideways or frontways.
- Side and top panels feature steel mesh, promoting airflow for internal components.
- Toolless removal of all exterior panels and modular brackets simplifies installation and cable management.
- Includes two USB 3.0 Type-A ports, one USB 3.1 Gen 2 Type-C port, and separate 3.5mm audio/mic jacks on the front I/O.
Cons
- No fans are included, requiring additional purchase for any active cooling.
- Cable management space on the back/right side of the case is limited, according to some users.
- Installing 25mm thick fans at the bottom restricts GPU thickness to 61mm (3 slots).
- Specific radiator and fan combo installations can eliminate space for the GPU.
Dimension Scores
The 26.3L chassis supports up to 10 x 120mm fans and a 360mm AIO, allowing for high thermal performance with powerful components.
Since no fans are included, the noise level is entirely dependent on the user's fan and cooler choices, making it an average starting point.
Constructed from alloy steel with steel mesh panels, the case offers a sturdy feel and a minimalist design.
User feedback indicates limited space for cable management on the back/right side, which can make routing challenging.
Best For
- Compact gaming PC builds utilizing a 4-slot, 415mm GPU and a 360mm AIO.
- Builders who prefer a minimalist aesthetic with extensive mesh for airflow.
- Users needing flexible PSU mounting options for various build configurations.
- Content creators or streamers requiring high-end components in a smaller footprint.
Not Recommended For
- First-time builders who might struggle with limited cable management space and component clearance in specific configurations.
- Users expecting pre-installed fans for out-of-the-box cooling.
Watch Out For
- Limited cable management space on the back/right side can make routing difficult.
- Using 25mm thick fans on the bottom limits GPU thickness to 61mm, potentially restricting GPU choice.
- Certain radiator and fan combinations might prevent GPU installation entirely.
Full Specifications
| ASIN | B0D5HCYZXR |
| Brand | Lian Li |
| Color | White |
| Series | A3W.US |
| Fan Size | 120 Millimeters |
| Material | Alloy Steel |
| Case Type | Mini-Tower |
| Model Name | A3W.US |
| Item Weight | 11.02 pounds |
| Manufacturer | Lian Li |
| Cooling Method | Air |
| Item model number | A3W.US |
| Product Dimensions | 20.08 x 15.35 x 10.63 inches |
| Item Dimensions LxWxH | 20.08 x 15.35 x 10.63 inches |
| Number of USB 2.0 Ports | 2 |
| Number of USB 3.0 Ports | 2 |
| Motherboard Compatability | Micro ATX and ITX |
| Power Supply Mounting Type | Bottom Mount |
| Recommended Uses For Product | Gaming |
What Buyers Say
Many users found this case surprisingly spacious for its 26.3L micro form factor, allowing for builds with large GPUs and 360mm AIOs. The toolless panel removal was frequently mentioned as a convenience for installation and access. However, several builders noted the restricted cable management space behind the motherboard tray as a point of frustration. The lack of included fans means an immediate additional purchase is necessary to get any airflow going.
“This case is smaller than it looks, which is cool, but man, trying to hide all those cables was a nightmare, felt like I was playing Tetris with wires.”
Common Praise
- Accommodates large GPUs up to 415mm long and 4 slots thick.
- Supports 360mm AIO radiators for advanced cooling setups.
- Toolless removal of exterior panels simplifies assembly and upgrades.
- Flexible PSU mounting options for ATX, SFX, and SFX-L power supplies.
- Mesh panels on three sides provide extensive airflow for components.
- Front I/O includes USB-C and dual USB-A ports.
Common Complaints
- No fans are included, requiring separate purchases for cooling.
- Limited space for cable management behind the motherboard tray.
- Bottom fan installation can restrict GPU thickness.
- Certain radiator placements can conflict with GPU space.
Ownership Tips
- The modularity is a lifesaver when you're trying to cram everything in, especially with the removable panels.
- You really need to plan your fan and radiator setup carefully, especially if you have a thick GPU, to avoid clearance issues.
- The mesh panels do a fantastic job with airflow, but they also mean you'll see every dust bunny if you don't clean it regularly.
- The flexible PSU mounting is genuinely useful for optimizing space depending on your other components.
Frequently Asked Questions
Does this case come with any fans?
No, the Lian Li A3-mATX does not include any fans. You will need to purchase them separately to ensure proper cooling for your components.
What size GPU can I fit in this case?
The case accommodates graphics cards up to 415mm in length and 4 slots thick. However, installing 25mm thick fans on the bottom will limit GPU thickness to 61mm (3 slots).
What kind of power supplies are compatible?
It supports ATX, SFX, SFX-L, and LIAN LI Edge PSUs. The PSU bracket is relocatable, allowing for flexible mounting options.
Can I install a liquid cooler in this case?
Yes, the case supports up to a 360mm AIO radiator, which can be mounted on the top or side.
How many storage drives can I install?
The case provides three drive bays: two 2.5-inch SSDs on a bracket and one 3.5-inch HDD or 2.5-inch drive at the bottom.
Buying Guide
When looking at a micro form factor chassis like this, you're balancing size with component compatibility. You need to consider if your chosen motherboard (Micro ATX or ITX), graphics card (length and thickness), and CPU cooler (air or AIO radiator size) will physically fit. Pay close attention to the cooling potential, especially since this case doesn't include fans, as proper airflow is crucial in smaller enclosures.
26.3L Micro Form Factor
This is the internal volume of the case, indicating its physical size. A smaller volume like 26.3L means it takes up less desk space, but also means component selection and installation can be tighter, like fitting a puzzle.
Supports 360mm AIO
This refers to the largest all-in-one liquid cooler radiator size the case can accommodate. A 360mm AIO offers substantial cooling for high-performance CPUs, which is important in a compact build where heat can build up quickly.
415mm large GPU compatibility
This is the maximum length of a graphics card that will fit. 415mm is quite generous for a micro form factor case, meaning you can install many of the longest, most powerful GPUs available without needing a larger chassis.
No Fans Included
This means the case comes without any cooling fans. You'll need to purchase and install your own fans to ensure proper airflow and cooling for your components, which adds to the total cost and build time.
Alternatives
If this case doesn't fit, search for micro ATX cases with more dedicated cable management space or those that include pre-installed fans for easier setup. If you need even smaller, look for ITX-only cases, but be prepared for more component restrictions.



