The Sapphire Pure Platinum A75 has 4 USB 3.0 (2 on the back panel, 2 from on-board header), a Single PCIe 2.0 x16 slot, 4 SATA 6 Gb/s ports, and your standard array of other options. Unique to the board (so far) is a mSATA slot on this ATX form factor board.
The mSATA slot is for an SSD, but I am personally not sure what to make of the idea. The options for SSDs that fit the form factor are very limited and slow compared to 2.5″ SSD drives. I would rather see them use this space to add an additional PCIe x16 slot to the board, or change the mSATA to a mini PCIe slot for a wireless-N adapter. Even with my grips, the board may still be a great overall buy depending on the price.