The Lian Li O11 Air Mini at first sounds like a simple variant of the O11 Dynamic Mini focused on airflow instead of glass panels. While the core of that statement holds true—it focuses on airflow—the O11 Air Mini has so many tweaks it could almost be considered a new and improved version of an already great case.

Starting with the exterior, the O11 Air Mini is wider and opts for steel-perforated panels along with aluminium strips for the solid parts. This results in the ability to utilize an ATX PSU instead of the somewhat limiting and more expensive SFX form factor. In addition to this, there is more interior room, making for better compatibility and flexibility when installing complex liquid-cooling setups. Alongside that, the interior has been improved as well, removing the need for any expansion plates to allow for wider ATX boards.

Lian Li has also gone ahead and simplified the modular rear of the chassis, no longer giving the user three possible layouts for ATX, mATX, or ITX. Instead, this is now limited to ATX or mATX as you may still use ITX regardless. However, thanks to further offset radiator mounting in the ceiling, there is less of a need to provide that additional vertical space the O11 Dynamic Mini had to with that now missing third layout.

To underline the fact that this is an airflow-focused case, Lian Li has gone ahead and installed three quiet retail-grade fans to take advantage of the fine mesh holes of the steel panels, and due to the tweaked interior, cable management has become both easier and cleaner than with the O11 Dynamic Mini as well. Couple that with the more flexible storage options and the O11 Air Mini manages to do way more than simply fill the shoes of the O11 Dynamic Mini.