The left hand side of the case features a very professional looking, factory installed glass window. It certainly looks a lot cleaner than some of the "do it yourself" windows and is great for people that are not too confident with power tools. The window is quite large, with dimensions of 11.5in x 13in. This allows people to see all the innards of your case and will give you great bragging rights, especially if you couple it with some sort of neon light kit.
The case comes with three 80mm ADDA case fans that do a great job of keeping your case cool. This is especially useful if you are an avid overclocker. Two of these fans are located at the front of the case, right in front of the hard drive bays. These fans will draw cool air from outside your case and blow it right onto your hard drives, keeping them nice and cool. The other fan is situated on the backplate of the case, right near where the CPU socket on your motherboard is. This fan takes the hot air around your CPU and pushes it out of the case.
The PC65 has the most drive bays I have ever seen in a mid-tower case. It features four 5 1/4" bays and eight 3 1/2" bays, 3 of which are visible, and the other five are hidden. For most of you, this is more than enough to house all of your devices with many bays to spare. Those of you that require more drive bays than this should look at purchasing a full tower case. Lian-Li were able to include so many 3 1/2" bays in a reasonably small case because of an extra hidden 3.5" drive cage.
Another thing to note is that all of the screws on the PC65 are thumbscrews, meaning that you can work on the case without the need for any tools whatsoever. This proved very useful, especially if you are someone like me that adds/removes parts from their PC every few days. Another thing that I really liked was the fact that all of the edges inside the case were sanded down, making it very hard for you to cut/injure yourself whilst working inside the case. In order to make it easier for you to install your motherboard and add-in cards, the PC65 also features a slide out motherboard tray.