The be quiet! Pure Base 501 Airflow in sleek Black is a midi-tower case designed to keep your components cool while maintaining a quiet environment. It features a mesh front panel that allows for high airflow, which is supported by two pre-installed 140mm Pure Wings 3 PWM fans located at the front and rear. Inside, you can fit ATX, M-ATX, or Mini-ITX motherboards, with enough space to accommodate CPU coolers up to 178mm in height and graphics cards up to 368mm long. For those who prefer vertical GPU installation, the seven expansion slots are rotatable to make the process easier. Built from steel for the top and side panels and ABS for the front and stands, the black chassis measures 450 x 231 x 463 mm including the stands. To minimize noise, the case includes insulation mats on the side panels and decoupled mounts for the hard drives, fans, power supply, and motherboard tray to reduce vibrations. You have plenty of storage options with slots for up to two 3.5" HDDs and five 2.5" SSDs. The front panel provides quick access to a USB 3.2 Gen.2 Type C port, two USB 3.2 Type A ports, and audio jacks. This case is a practical choice for builders who want a balance of thermal performance and silence. It offers flexible cooling options, supporting radiators up to 360mm in the front, 240mm at the top, and 140mm at the rear, making it suitable for both air and liquid cooling setups.