"Since the launch of the A8 and A6 series of APUs from AMD, the motherboards we've looked at have revolved around the A75 chipset. It's a great chipset, offering some great features like SATA III and USB 3.0 support. It seemed like everyone had forgotten about the A55 series chipset, though, which launched at exactly the same time.
Little differs between the two chipsets with the most obvious being that the A55 lacks both SATA III support and USB 3.0 support; instead it opts for only SATA II and USB 2.0 support. But what if you don't have any intention of using a SATA III drive and don't have any USB 3.0 devices? What if instead you want to save some money? In steps the A55 chipset and in this case, in steps GIGABYTE with the A55M-S2V. Sure, we use a SATA III drive for our tests and we use USB 3.0, but those technologies are both backwards compatible."