connect a monitor via hdmi port macbook pro retina
how do I connect a monitor to my macbook pro retina via hdmi port with a vga adaptor
MacBook Pro with Retina display, OS X Mavericks (10.9)
You need an adapter. This is hdmi to VGA. If your monitor or projector uses DVI, I would call that better but here is what you asked for
http://store.apple.com/us/product/H9139VC/A/kanex-atv-pro-hdmi-to-vga-adapter-wi th-audio-support