Cool air is pulled in from the rear and expelled out the front
Lian Li's been busy turning its prototype PC-A51 chassis into a real product , and that mission is now complete. What makes the PC-A51 unique is that it sports a reverse airflow design in which cool air is pulled in from the back of the case through a filtered 120mm fan and pushed out through a front-mounted 140mm fan that sits above the front-mounted PSU. An additional 120mm or 140mm fan can be installed on the floor of the case.
According to Lian Li , the PC-A51 is the result of user feedback after showing a prototype off to the DIY community. In addition to reverse airflow, the PC-A51 also features Lian Li's new HDD/SSD mounting system. System builders can install either 3.5-inch or 2.5-inch drives in any of the five individually removable bays. If the bays are removed, up to three 2.5-inch drives can be mounted directly to the tray, plus an additional one on the backside of the mobo tray.
The PC-A51 is a compact case though it's able to fit CPU coolers up to 6.8 inches in height and power supplies up to 6.2 inches in length. Graphics cards can be as long as 15.7 inches, and there's room for a 240mm or 280mm radiator up top.
Four versions of the PC-A51 are shipping to the U.S. They include the PC-A51A (silver) and PC-A51B (black) for $149, PCA51WX (internal black w/ window) for $189, and PC-A51WRX (red and black w/ window) for $199.