Just wondering what mSATA is due to the lack of it on my motherboard.
mSATA is an interface type. the mSATA SSD's that use the format have the same max speed as normal SATA III SSD's so 6Gbit/s. Basically it was a short lived format and while there are drives that can use the interface still available for sale such as the Samsung 840/850 EVO mSATA versions, its largely irrelevant and a non-issue.
Cool, thanks for answering so quickly!
It's really mostly used on small from-factor motherboards, such as Thin Mini-ITX (Being superseded by Mini-STX) and Mini STX. Though Thin Mini-ITX is the same size PCB-wise, there is less space in Thin Mini-ITX cases, so there is usually no room for 2.5" SSDs. Thus, mSATA drives have to be used to keep size down. The market for mSATA drives is quite small, though.
mSATA is essentially a form of SATA interface that was designed for low profile systems. It uses almost all the same connections as SATA and is common in laptops with removable SSDs.