This is a USB/eSATA Combo Port: They are found on some newer laptops including the Dell Studio 15 that I'm using right now. I have confirmed that both eSATA and USB devices work perfectly with the same port, but can they work at the same time? Why can't we get a flash drive that is powered by the USB port and transferred through eSATA without having to use another cable? This could revolutionize high-speed portable storage. Combine this with SSD technology, and we could have 1.8" or 2.5" External SSD's at their max potential with a single cable!