The sonnet solo10g works like a charm with osx and linux with just a thunderbolt port, around 9,8Gbps.
Use SFP+ port instead of Ethernet, more options for connection and less power draining.
Been eyeing it for a while now gotta admit. The desktop setup I'm looking at would be pretty expensive with both that and a thunderbolt dock. So annoying I can't get a thunderbolt dock with SFP+ directly instead.
You can DIY it, though. A lot of options on ali/ebay