"The Lian PC-A77 Case is all aluminum and comes with 12 5.25" drive bays, 9 HDDs bays (repositionable), 4 120mm fans, dust filters, and a removable motherboard tray. It even has a smart fan control which adjusts the speed of the 3 120mm fans automatically from 1020 to 1500 RPM based on CPU & system temperatures. This display shows temperature, fan speed, time as well as HDD activity & power status. This case is most content full of high end hardware! Watch the video to find out more." ~3dGameMan.com