The eSATA port on the back is also a USB port
The SD card, HDMI, and trackpad I was able to get working. I had the Integrated USB port in the back working - but I wasn't able to test the eSATA port.
On the 6430u - all three USB ports are 3.0. After a few attempts I have 10.9 running on it, smooth sailing so far. Though I did spend an hour trying to figure out why the wireless wasn't working (Dell 1510), only to find out the external switch was off
Actually I was able to get 10.8.5 running with everything working - my issue was I need to boot the USB with the -gux_defer_usb2 flag in order to get to the installer. Though I quickly moved on to 10.9 to see if I could get that working