be quiet! Dark Base 900 Midi-Tower Case, Black/Orange

The be quiet! Dark Base 900 is a midi tower case engineered for high levels of modularity and system flexibility. Its construction combines aluminum, steel, and ABS plastic to provide a solid frame for custom PC builds. A primary feature is the fully relocatable motherboard tray, which can be repositioned for an inverted layout or used as a standalone test bench. The chassis offers extensive compatibility, accommodating motherboard form factors from Mini-ITX up to E-ATX and XL-ATX, suiting a wide range of system configurations.

Thermal management is addressed with three pre-installed 140 mm Silent Wings 3 PWM fans and an integrated fan controller for adjusting acoustic and cooling performance. The case is designed for both extensive air and liquid cooling setups, with support for radiators up to 420 mm in the top and front positions. It also provides ample component clearance, including 185 mm for CPU coolers. Dust filters are located at key intake points to help maintain internal cleanliness and airflow efficiency over time.

• Supports ATX, E-ATX, Mini-ITX, and XL-ATX motherboards
• Constructed from aluminum, steel, and ABS plastic
• Features a relocatable motherboard tray for inverted layouts
• Includes three pre-installed 140 mm Silent Wings 3 PWM fans
• Accommodates liquid cooling radiators up to 420 mm
• Offers space for seven 3.5-inch and fifteen 2.5-inch drives
• Provides 185 mm of clearance for CPU coolers
• Equipped with an integrated multi-channel fan controller
• Front panel includes two USB 3.2 Gen 1 and two USB 2.0 ports
• Designed with eight expansion slots for components