M4A785-M vs M4A785D-M Pro

I've been looking for a new mATX motherboard with 4xDDR2 slots and AM2+/AM3 socket for use with a Phenom II X2 550BE and I've set my eyes on a Asus M4A785-M but I've also noticed a M4A785D-M Pro and the only difference between the two as far as I can tell is an extra eSATA-II port (which I don't need at the moment) on the M4A785D-M Pro. Price difference is marginal so I want to know what significant difference there is between the two, perhaps which one is better at OC-ing (not that I would want to OC, but it's good to know that I can if I wanted to).

On a side note: I've checked a cpu-upgrade.com to see what processors they both support and Athlon II X4 620 and 630 are not listed for the M4A785D-M Pro. It doesn't say they're not supported, it's just not listed (perhaps the 620/630 hasn't been available at the time the list was compiled and they forgot to update) while the slightly cheaper M4A785-M has them both listed.