I have decided for nostalgia to use this old Lian Li case for my next build. This case is unique. The object in the photo is a CPU duct. It blows air from outside onto the CPU. After cleaning the case, I noticed that the front fan was blowing outward. I turned that around. In which direction should the side fan be blowing? If memory serves me, it was blowing air out of the case. This case also features a removable motherboard tray.