The PC-A77 has a very logical construction. Almost everything is removable, which not only makes for quick installation, but also simplifies modifications and customizations if desired. In this first picture, we can also see one of the key differences between the PC-A17 and the PC-A77, which is the vertical PCI support bar. This bar has fittings to help support the rear ends of long PCI cards so that they do not bend, as well as room for an optional chipset fan. It does get in the way of installation, though, and as such can be removed with two screws, and easily replaced again if desired.
Each of the drive bay guards pops out easily by squeezing its two exterior sides and pulling. They are all filtered with black mesh, keeping dust from coming through their circle-cut grills. The filters can be easily removed for cleaning, and they fit back in just as easily.
There are two rubber strips at the bottom of the case to reduce PSU fan vibrations. The PSU also gets its own grill, in case it has a bottom side fan. Again, this space can be used as a hard-drive cage, and the PSU moved to the top of the case. The seven expansion slots are vented, and come with thumb screws to help simplify installation. To the left of the expansion slots, you'll find a slotted grill, into which an optional (meaning you have to buy it separately) PCI cooling fan can be installed. At the top of the case, we can get a better look at how the hard-drive cage is installed. By removing four screws, two on either side, the cage can be removed, and then moved around. In this picture, we can also see one of the screws that can be used to remove the PCI support beam.
Standard with each PC-A77 case are two more hard-drive cages, found in the drive bays. Each cage holds three standard 3.5” hard-drives, and has a fan installed on the front. These cages each take up three of the 12 external drive bays. There is no grill or filter built into the fan on the drive cage because each drive bay comes complete with its own mesh filter, as we saw before.
Now that we've had a look at everything this case can do, let's see how easy it is to throw some hardware in there.