(Mavericks)
This one works really well. Full Speed, no errors.
4 Port USB 3.0 HUB to ExpressCard Express Card 34 34mm Adapter Converter 5.0Gbps FL1100 Chipset
There are patches and workarounds for using it with Yosemite, but with Mavericks it works great for me. I needed the USB 3 port since I got and Atomos Shogun and the reader is USB 3 and not Firewire 800. I am still using the old 17" Macbook Pro- until Apple makes a new version...
