Ultra Small Footprint Chassis Small, Smart, Sleek and Spectacular! The BQ Series is only 3.3 liters in size but includes various multi-functional features. Supports Mini-ITX Motherboard BQ Series supports standard Mini-ITX motherboard for easy integration. Tool-Free Clips Facile tool-free clips on side panel for easy assembly. 120W/150W Internal PSU or 120W External Adaptor election of either an 120W/150W Internal PSU or 120W External Adaptor upon application. Features low power consumption and minimizes noise levels for a silent computing experience. Dual Layer Interior Structure Design The BQ Series uses an advanced dual layer interior structure design. The spacious interior supports a DVD Drive, Hard Drive, and 3-in-1 Card Reader. Space Saving With a depth of less than 80mm, this chassis can be easily mounted behind an LCD monitor. The BQ Series not only minimizes its size but also maximizes its features.