Had a hell of a time making it work, but finally got it to. Ultimately, I had simply missed one radio button in the switch to make it all happen. I still don't have another PC set to take advantage of it all, but seeing 4Gbps in the status window was pretty cool. I know this might not be a big deal for some, but I just learned of this a month ago or so...all new to me. Thankful to have it working!