Lian Li DAN Cases B4 Black Case mATX

Lian Li DAN Cases B4 is a compact Mini Tower case for Mini ITX and mATX configurations, aimed at enthusiasts who want a small but serious build. The black, clean design is windowless and RGB-free, so the focus is on functionality and good airflow, not on a light show. Despite its modest dimensions, it has room for a graphics card up to 358 mm and a cooler up to 165 mm, which opens the door for quite powerful GPUs and serious air CPU cooling. The case comes without a power supply unit, but with flexible support for SFX and shorter ATX PSUs, as well as ready mounting positions for water cooling.

What you get: a design thought out for airflow and high-end hardware in a small volume. On top, you already have 2 x 120 mm slim fans factory-mounted, which helps you get the hot air out of the case right from the case (literally). On the side, you can fit a 360 / 280 / 240 mm radiator if you have an SFX PSU, or up to a 240 mm radiator if you go with an ATX PSU – thus you choose between maximum water area and a more standard power supply. A graphics card up to 358 mm leaves you calm for most modern GPUs, and the four expansion slots are sufficient for thicker cards and additional cards if needed. You also have one slot each for 3.5" and 2.5" devices, which is fully sufficient for a modern build with an NVMe SSD at the bottom plus one large HDD or SATA SSD for extra space.

• Support for Mini ITX and mATX at the bottom, which gives you the freedom to choose a slot-rich mATX or a maximally compact ITX solution.
• Compact Mini Tower form factor with power supply placement at the front, which frees up space for a long graphics card and a more flexible internal layout.
• Room for a graphics card up to 358 mm, suitable for high-end GPUs with massive coolers, without sacrificing the case size.
• Maximum CPU cooler height of 165 mm, which allows the use of most serious air coolers on the market.
• Flexible water cooling support: side radiator 360 / 280 / 240 mm with SFX PSU or up to 240 mm with ATX PSU, so you can choose the best combination for your build.
• Rich fan options: on top 2 x 120 mm slim (included), on the side up to 3 x 120 mm or 2 x 140 mm, on the bottom up to 3 x 120 mm or 2 x 140 mm, plus rear and front 120 mm, which allows serious control over airflow.
• Clean black design without window and without RGB, suitable for minimalist and „quiet“-looking configurations where you do not seek light effects.

Who it is suitable for: for enthusiasts who want a compact, design-clean case for a powerful ITX or mATX build – gaming, streaming, or productive. Especially suitable if you plan a strong GPU and/or water cooling and want maximum freedom for radiators and fans in a small format. If you are looking for an RGB showcase with a glass panel, or want a bunch of 3.5" drives for a NAS, this is not the most logical choice.

The combination of compact dimensions, room for a long graphics card, and serious support for water and air cooling makes Lian Li DAN Cases B4 one of those cases with which you can make a truly tight and powerful build. The most sensible thing here is how flexible you can configure the cooling depending on whether you will use an SFX or ATX PSU.