Small, Smart, Sleek and Spectacular! The BQ Series is only 3.3 liters in size but includes various multi functional. Selection of either an 120W/150W Internal PSU or 120W External Adaptor upon application. Low power consumption and minimizes noise levels for a silent computing experience. 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.