On my Windows desktop, I currently have 2 PCIe cards connected to Multiface 2 (audio interface) units, and one PCI card connected to a Multiface 1. However, the desktop is starting to creak a little bit so I’m afraid I’ll need to modify or upgrade my setup soon. The thing is, I also have a 2011 13 inch MacBook Pro. So I was thinking I could purchase an NA211TB PCIe thunderbolt expansion chassis (http://www.dynapowerusa.com/product/na211a-3-slot-pcie-expansion-box/) and upgrade the card to work with that. I haven’t been able to find much info on the unit though, has anyone used one of these or is familiar with them?