About 3 months ago Lian Li was teasing enthusiasts about an upcoming open air chassis series, stressing that the final designs were still in the works and calling on their supporters to offer ideas. A few months later, we have the culmination of that feedback with finished versions of the company's new O series. The design has changed quite a bit, and from my perspective these are no longer open air cases, even though Lian Li is still classifying them as such. Instead, I would say the 'O' stands for "oversized window," as one of the key aspects of the series are the oversized tempered glass windows that combined with Lian Li's renowned aluminum construction and PCI riser cards make them perfect for showing off your machine's guts. In fact, Lian Li takes it a step further and suggests you hang these on the wall, and includes mounting holes for that purpose. Read the complete review.