Do you know one that could work on the 2011 MBP 17" ?
If you fancy going the DIY route, https://forums.macrumors.com/thread...-1-and-up-with-pcie-expresscard-slot.2135898/ could be interesting. This thread contains no reports on using it with a 2011 17in MBP but it's been reported to work with a MBP4,1 and MBP5,2. My own attempts to get it working with a really old MBP2,1 have failed so far, however.