Lian Li Launches A4-H2O in Collaboration with Dan Cases

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Lian Li
Lian Li

Today, Lian Li launched the A4-H2O m-ITX chassis in collaboration with DAN cases. This small form factor case measures only 11 liters but can house a 240 mm liquid cooler and a triple slot GPU of up to 322 mm long. Pre-ordering starts today and is available in either black or silver. A PCIe 3.0 or PCIe 4.0 riser cable is included with the purchase. The U.S. MSRP for the PCIe 3.0 version is $129.99 and the PCIe 4.0 version is $164.99. Global pricing varies slightly. Below is Lian Li’s official press release with additional details and links.

LIAN LI Launches the A4-H2O – a DAN Cases Collaboration

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  • 11-liter small form factor case designed by DAN Cases and produced by LIAN LI
  • Sandwich layout with support for 240 AIOs and GPUs up to 322mm
  • Removable top, bottom, front, and side panels for easy installation and cable management
  • PCIe 3.0 and 4.0 versions available starting at $119.99

February 9th, 2022, Taipei, Taiwan – LIAN LI Industrial Co. Ltd., a leading manufacturer of chassis and PC accessories, announces a new small form factor case made in collaboration with DAN Cases, the A4-H2O. The 11-liter compact case can support a 240 AIO and a triple slot GPU up to 322mm long. With a minimalistic design featuring anodized and sandblasted aluminum panels, the A4-H20 is available in black and silver and is available with a PCIe 3.0 or 4.0 riser cable.

Designed by DAN Cases – Produced by LIAN LI

Based on the design of the A4-SFX, the A4-H2O keeps the same clean aesthetic and minimalistic concept but increases GPU size compatibility and AIO water cooling support. At only 11 liters, the A4-H2O truly encompasses the small form factor spirit with a clever new design by Daniel Hasen from DAN Cases, while being produced through the experienced manufacturing hands of LIAN LI.

All-around Removable Aluminum Panels

The steel frame of the A4-H20 is flanked with anodized and sandblasted aluminum panels, perforated at the top and side to provide direct airflow to all hardware. All the aluminum side panels are secured to the case with snap pins, making their removal quick and effortless. When removed, the front panel gives way to a wide opening to simplify the installation of large GPUs. At the bottom, a perforated aluminum panel can be removed to mount the SSD out of the case and provides access to the PSU for easier cable management

Compact and Powerful

The A4-H2O achieves its small footprint by organizing the hardware layout in a sandwich layout. The Mini-ITX motherboard tray and removable SFX or SFX-L PSU mounting bracket are located on the left side of the case, the right side offers enough room to vertically mount up to a triple slot and 322mm long GPU. At the top, a removable bracket can host up to 55mm thick radiator and fans of a 240 AIO with CPU block up to 55mm in height. A 1x 2.5” SSD mounting area featuring rubber grommets is located at the bottom of the case.

The A4-H20 is available for pre-order starting February 9th, 2022.




Global MSRP

PCIe 3.0



PCIe 4.0



For more information about the A4-H2O, visit



(D)326mm x (W)140mm x (H)244mm


Black / Silver (Matte Black Interior)








Aluminum Exterior
SPCC Steel Structure


Top: 120mm x2


Top: 240mm x1 (Total max. thickness w/ fans: 55mm)


Max 322mm


Max 55mm


Bottom: 2.5” SSD x1




1x USB 3.0
1x USB 3.1 Type-C
1x Mic
1x HD Audio
Power Button


1 Year

The A4-H2O is available at NEWEGG:

The A4-H2O is available at Caseking:

The A4-H2O is available at Overclockers UK:


LIAN LI Industrial Co. Ltd is one of the world’s leading consumer brands for PC chassis. With over 20 years of experience in designing and manufacturing PC chassis under its own name and community projects, the company has produced some of the most iconic designs to date. LIAN LI’s award-winning products are sold worldwide to PC enthusiasts, builders, and gamers. To learn more about LIAN LI, please visit You can also follow LIAN LI on FacebookInstagramTwitterand YouTube.

-John Nester (Blaylock)

About John Nester 376 Articles
John started writing and reviewing PC components for in 2015, but his passion for PCs dates all the way back to the early 1980s. His first personal computer was a Commodore 64 with a cassette drive. As a dedicated member of the news team, he focuses his articles on new product releases and software updates. He reviews a wide variety of PC components including chassis, storage drives, keyboards, and more. John works in technology as a C.A.D. designer for a major automotive manufacturer. His other passions in life include motorcycles, hunting, guns, and football.

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23,872 messages 363 likes

I'm loving these small mITX cases that support big coolers and big GPUs coming out lately. Might be getting close to time to replace my Hadron.

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7,895 messages 627 likes

Agreed. I've never been a fan of the Super towers, even when having 5 ODDs was the norm. With the rising popularity of M.2, I'm wondering if or when we will ever see our first HDD bay/SSD tray-less chassis.

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74,877 messages 1,777 likes

Good question. If I had to guess, I'd say not for a while. 2.5" SSDs just recently were the norm. PCIe-based M.2 is still relatively pricey /GB. While there are SATA-based M.2 modules, most motherboards have one, maybe two, sockets that can run SATA M.2.

There's also warm/cold storage needs which at a $/GB aspect HDDs own hands down. That said, you could build a NAS or something too and move that off the PC.

Also, who runs 5 optical drives? I had two (a reader and a burner), but 5? Wowzas!

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5,255 messages 399 likes

Honestly, NVMe drives are dropping in price fairly quickly. A budget 500gb 3.0 x4 drive is in the $50-60 range. Seems like even the larger OEMs are going the NVMe route with their low to mid range office units - at least that's the sense I got last time I was bored in Costco and took a spin through the PC section.

There could be some sort of a market now for a fully bay-less case for those that want to go a similar route, just a basic desktop office build or an HTPC that streams from a NAS.

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74,877 messages 1,777 likes

'Mini PCs'. Things like the Gigabyte Brix fit that bill and, IIRC is only M.2.

Reply 1 Like


5,255 messages 399 likes

Don't get me started on those little NUCs. Grabbed an Asus PN41 over this past cyber Monday, it's reminding me why I hate Asus :D

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12,444 messages 1,137 likes

As far as the new ITX case looks nice then I feel like I've seen almost the same multiple times already. It's like correcting the same design for a couple of years ... and somehow every ITX case this type is missing something, or is slightly too small, or has problems with airflow what causes the graphics card is noisy, or can't install AIO ... always something is missing. In the end these small PCs look amazing on photos but are not always great in daily usage. Almost every ITX case that I had required hard mods ... and I actually modded almost every ITX case that I had (the list is quite long). Only Jonsbo A10 left without mods but it has problems with the PCIe riser and I don't want to spend $130 only for a riser.

I don't get an explanation that someone doesn't have enough space for a larger PC case. The foot is almost as large as that of small ATX towers. Small ATX towers cost less, can install cheaper ATX motherboard, can install cheaper ATX PSU, can install more standard CPU cooler, and the PC runs cooler without additional noise. So I see it like all these expensive ITX builds are for enthusiasts who like to "compress" stuff for fun. I won't deny, I like to build small PCs but the marketing around it is ridiculous.

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click to expand...


7,895 messages 627 likes

Also, who runs 5 optical drives? I had two (a reader and a burner), but 5? Wowzas!

Maybe I was the only one back in the day ripping "mix tapes CDs" for all my friends and family.

EDIT: As far as the drive bays go, I could totally see the 3.5" bays starting to disappear as soon as this year. The 2.5" trays though, I agree, they will be here for a long while. They don't take up much space and manufacturers can just add holes to the back of the motherboard tray at virtually no cost to them.

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74,877 messages 1,777 likes

Maybe I was the only one back in the day ripping "mix tapes CDs" for all my friends and family.

...or I just realized I've been terribly inefficient. :rofl:

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Voodoo Rufus


6,764 messages 321 likes

This is such a cute little case and I almost want to build a rig in one. I just watched the Optimum PC build of one and it went straight to the "nope" bin. Way too tight.

I'm all M.2 in my main rig now. Since 1-2TB NVME are pretty much at price parity with SATA, there's no point to bays in a case to me any more. My NAS takes the overage.

Reply 1 Like