You'll need the 3 port dongle for 79 bucks and need to get a USB to HDMI box to plug into the USB port. One of those by Cable Matters claims to do 2560x1440 so have a search of Amazon for it.
You'll need the 3 port dongle for 79 bucks and need to get a USB to HDMI box to plug into the USB port. One of those by Cable Matters claims to do 2560x1440 so have a search of Amazon for it.
It probably can because one of them is run over USB. This is not optimal as it requires the video signal to be compressed which will require some CPU time and the picture on the USB monitor may not be perfect for things other than static content, but many people generally are happy with this method of adding a second monitor (not specifically for the rMB, but in general). Might be worth a shot in your case. You could also try a full solution like this. http://www.amazon.com/Plugable-UD-3...450437294&sr=8-3&keywords=usb+docking+station
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Pretty much what zhenya says. The MacBook says it can drive an external display natively much greater than 2560x1440. Some of the USB dongles claim that same resolution. It's for you to research and validate.