OK, I am not any great tester or writer, but here are a couple of tests I did when I installed a ASUS Model U3S6 USB 3.0 & SATA 6Gb/s Add-on card in my Gigabyte GA-X48-DS4 MB and added a KINGWIN Dockmaster DM-2535U3 2.5" & 3.5" Black USB 3.0 Hard Drive Docking Station. But, before I begin, the ASUS card works great, it is NOT a RAID card, so you just get 6Gb/s and USB 3.0. However, for $30USD approx. ; ain't to bad a deal considering a USB 3.0 only card can go for this or more. I have not recieved my 6Gb/s drives so, that is not in this test. The KINGWIN Dockmaster DM-2535U3 is alright, not great, as, it has a con or two. The drive door sticks, there is no eject button and it does not have eSata. But, I did get a really good deal. A gift to me from a person I helped. Test one is with a WD5000AACS (green drive, first gen): USB 2.0 (hi-speed) USB 3.0 (super speed) Test two is with a Patriot Warp V2 with a JMicron controller USB 2.0 (hi-speed) USB 3.0 (super speed) As, you can see from the results, there is a boost in the performance using USB 3.0. EDIT: For Sasqui WD5000AACS (green drive, first gen) on SATA III port: Patriot Warp V2 with a JMicron controller on SATA III port: Now, remember, even on the SATA III port these are SATA II drives. The SSD seemed to fair better on the USB 3.0 port. The burst speed is something I am going to look into. And, I will be trying a test on the SATA II port, later... Guess I need to build a test chassis.