It's a Clinker.
Well, I'm going to have to buy a new hard drive. I want to buy this 500 GB SATA Western Digital hard drive from NewEgg - it's a heck of a deal. But I have a smidgen of a doubt that it'll work with my motherboard. It's an MSI K8NGM2, and supports SATA II up to 300MB/s. But the hard drive is 3.0Gb/s - what's the dealio? All the drives seem to have that spec, but it's an order of magnitude off from from my motherboards' spec. Unless there's an important difference indicated by the lowercase versus the uppercase "b".