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The Lian Li A3-mATX-26.3L is a premium micro form factor chassis designed for M-ATX and ITX motherboards, featuring a compact 26.3L volume, steel mesh panels for superior airflow, and support for up to 360mm AIO radiators. Its modular PSU installation supports multiple power supply types and orientations, while accommodating large GPUs up to 415mm. Engineered in collaboration with DAN, this case balances sleek aesthetics with high-performance cooling and build quality, making it a top choice for professional-grade compact PC builds.



















| ASIN | B0D5GYY364 |
| Antenna Location | Gaming |
| Best Sellers Rank | #11 in Computer Cases |
| Brand | Lian Li |
| Case Type | Mini-Tower |
| Color | Black |
| Compatible Devices | M-ATX and ITX motherboards, graphics cards up to 415mm, 360mm radiators, 10 x 120mm fans, ATX, SFX, SFX-L power supply units |
| Cooling Method | Air |
| Customer Reviews | 4.6 4.6 out of 5 stars (203) |
| Enclosure Material | Alloy Steel |
| Fan Size | 120 Millimeters |
| Hard Disk Form Factor | 3.5 Inches |
| Internal Bays Quantity | 3 |
| Item Dimensions D x W x H | 17.44"D x 7.64"W x 12.05"H |
| Item Weight | 11.02 Pounds |
| Manufacturer | Lian Li |
| Model Name | A3X.US |
| Other Special Features of the Product | Flexible Power Supply Installation, Supports 360mm AIO, Modular Design |
| Power Supply Mounting Type | Frontways |
| Supported Motherboard | Micro ATX and ITX |
| Total Expansion Slots Quantity | 3 |
| Total USB 2.0 Ports | 2 |
| Total USB 3.0 Ports | 2 |
| Total Usb Ports | 2 |
| UPC | 840353046429 |
| Unit Count | 1.0 Count |
| Warranty Description | 1 year |
A**N
Great case, tricky planning and build
The main gimmick of this case is the ability to mount psu at different heights depending on your needs, if you want watercooling you'll need to place it lower for more room at top, want a long gpu place it higher to increase clearance upto over 400mm, want both you'll need a sfx psu which is easier to cable manage anyway, want a thick gpu, upto 4 slots but anything thicker than 2 you won't be able to have bottom fans or drives Pros. Compatible with fullsize components Looks nice(imo) Easy front panel connector Relatively compact Outstanding build quality Affordable Cons. Horrible cable management options Screws come mixed in bag Limited compatibility(may not match the maximum listed dimensions) Parts used in my build GPU: 7900gre hellhound PSU: Toughpower gf3 1000w CPU: ryzen 7 7800x3d Motherboard: mag b650m mortar wifi Cpu cooler: deepcool assasin IV(may be unavailable due to recent ban, I bought it a while before I learned of the Russia issue) Fans: artic 120mm 5 pack, I could only fit 3 with my gpu blocking the bottom 2 Would definetly reccomend to experienced builders or anyone willing to do the research on each components compatibility(or want to take the gamble) Edit: it's also important to mention that come cpu coolers like mine will prevent you from installing the side fan bar, whcih means even tho there is room between my cpu cooler and psu for a fan I can't put one there since the part the fan attaches to is blocked, because of that I could only fit 3 fans, 2 on the top and 1 in back, all exhaust unfortunately whcih means it's a negative pressure system, air can get in through the sides but this will lead to some dust build up
L**B
Very cool case
Awesome case, I was able to fit a full water cooler, fans, and a 3 fan 3060 into it. Very easy to assemble and compatible with many different options. Some of it is plastic, some is metal so do with that what you will. Very hard to cable manage it but I got it to fit onto my desk better anyway so it doesn’t bother me.
D**6
It can fit A LOT. Amazing discrete build!!
Easier to build on than ANY full atx case. And it comes witg brackets for EVERYHING. It could use a simpler bracket for the psu especially. Especially to take advantage of an sfx, but everything else is as spedicied. Its a pleasure to build on.
J**N
7/10 works decently
Decent case. Very good airflow, although it's almost impossible to cable manage in (because it doesn't have a compartment in the back). Very small. The screws came in a nicely organized box. It works well with my rig, takes up very little space on my desk (well, not as small as an itx case), and looks clean. Overall 7/10.
G**N
awesome micro-atx case
phenomenal micro-atx case. I really appreciate how it can fit my 7900 xt. What sold this to me was the mesh/perforated build. Despite having mesh, I was able to build a quiet system. Highly recommend
V**R
Solid Build, Clean Design, but Limited Cable Management
I recently built my PC using the Lian Li A3, and I’m overall pleased with the case. It delivers excellent build quality, a clean aesthetic, and decent cooling, but there are a few things to consider before making your purchase. Pros: Build Quality: The Lian Li A3 has a premium feel with its aluminum construction. It’s solid and lightweight, making it easy to handle and position on your desk. Design: The minimalist design is sleek and clean. The front panel is simple, with a nice look that fits well in any setup. The side panel is a mix of mesh and aluminum, providing a nice balance of airflow and durability. Cooling: While it doesn't have a dedicated front mesh panel, the case still has adequate airflow, especially when combined with good quality fans. The mesh-aluminum side panel does a decent job of letting air flow in while maintaining the case’s clean design. Compact Size: The A3 is a compact case, perfect for users who are working with limited space but still want to fit in full-size components like a standard GPU. Cons: Limited Cable Management: The cable management space behind the motherboard tray is quite tight, which made organizing cables a bit tricky. It’s doable, but not as easy as some other cases that offer more space and options for cable routing. Overall: The Lian Li A3 is a solid choice for anyone looking for a high-quality, minimalist case. While the limited cable management space and the lack of a tempered glass side panel might be drawbacks for some, it’s still a great option for users who prioritize design and compactness over flashy features. If you're okay with a bit of effort in cable management, this case is a great value.
M**N
Lian Li A3 Case
Great case and decent price. However, building in this case was not the greatest and requires quite a bit of stealth. Airflow is okay but the front panel should be mesh in order to add more airflow to the build. Cable management is tight but can be done. Great case otherwise.
N**K
A Good Case.
This is a good case for its size because it is compatible with different power supplies and has room for larger cpu coolers.
A**C
Necesitaba este case por las características que tiene, es bonito, elegante, y tiene el espacio para los componentes que necesito. El único problema que veo es que la tapa de enfrente puede tapar un poco el aire de la fuente, aparte de que es un plástico muy sencillo. Pero de ahí, todo lo demás es muy bueno si necesitas un gabinete de estas características.
D**E
Gabinete perfecto en todos sentidos. Excepto por el panel frontal de plástico barato que ni ventilación tiene. Todos los modelos Lian Li A3-mATX deberían incluir el panel frontal de madera con ventilación. O mínimo el panel de plástico barato debería tener ventilación, sobre todo que de ese lado va a ir la fuente de poder y el ventilador de la fuente de poder.
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