The GIGABYTE AORUS C400 GLASS (GB-AC400G) is a compact 40L mid-tower case that uses a vertical airflow design to rapidly move heat from the bottom to the top. It features a tool-free modular design for easy access to panels and comes pre-installed with four 120mm ARGB PWM fans and a built-in connector hub for expanded lighting. Despite its smaller footprint, it maintains high compatibility, supporting ATX motherboards, 360mm radiators at both top and bottom, and vertical GPU mounting. The aesthetic is rounded out by a 4mm non-drilled tempered glass side panel and a high-speed USB 3.2 Gen2 Type-C port on the I/O panel.