Originally Posted by Gorath /t/1421235/is-the-msata-port-on-the-boxdh77df-sata-ii-or-sata-iii#post_22238965
Block diagram on page 16
mSATA connector connected (1) SATA 3.0Gb/s
eSATA connector connected (1) SATA 3.0Gb/s
(2) SATA 3.0Gb/s connectors
(2) SATA 6.0Gb/s connectors
That fills out the 4 SATA II and 2 SATA III available on the H77 chip. There doesn't appear to be any shared connectors.