Query failed: connection to localhost:9312 failed (errno=111, msg=Connection refused). USB upgrade - Genius Bar Discussions on AppleInsider Forums Toggle navigation All Forums Recent Posts Sign In USB upgrade stuckonapple Posted: April 16, 2009 9:18PM in Genius Bar edited January 2014 What software update would be necessary after installing a USB 2.0 board. I'm installing it in a G4, circa 2001. The bigger question, can you upgrade at all???/ Comments Reply 1 of 2 karl kuehn Posts: 756member April 17, 2009 1:42PM Are you sure that you have drivers for that PCI card? If you don't have drivers then you are probably out of luck. If you have drivers installed (or they are already included in the OS), then there would be nothing more to do. My bet is that there are no drivers available, but that is purely a guess. Reply 2 of 2 addabox Posts: 12,660member April 17, 2009 1:50PM Kinda depends on the card. Lots of folks have installed USB 2.0 cards on old G4s without issue, whereas some chipsets seem to induce sleep and kernel problems. Sign In or Register to comment.