SOO... long story short, I'm fumbling around with my external backup drive and I plug it in and go. A few seconds later I notice the USB port is already taken, but it seems to be working. So I'm like... wtf... I plugged my USB Backup drive into the eSata port... and it's WORKING. I then figured out I have something called eSatap which combines a USB and eSata port into one port.... I didn't even know that existed until tonight.