- Forum: Mac OS X
"Previous OS X 10.9.3 betas added pixel-doubling scaling support, suggesting the upcoming maintenance update will bring a so-called "Retina" output mode for users connecting their late-2013 MacBook Pro with Retina display to external 4K monitors." What about 2012 and early-2013 rMBPs? Will they not support pixel-doubling scaling on 4K monitors? I have an early-2013 15" rMBP.