crwdns2933423:0crwdne2933423:0
crwdns2918538:0crwdne2918538:0

crwdns2934241:0crwdne2934241:0 davidanderson717

crwdns2934249:0crwdne2934249:0:

Sierra will run on that machine, just the standard wifi card will not work, you can replace the standard Broadcom card with a later card, or buy the upgrade that is sold on Amazon.  If you do not want to start taking your Mac Pro apart have a search for a suitable wifi dongle, which is what I did.

crwdns2915684:0crwdne2915684:0:

open