Hey. I bought myself a new external monitor to be used with my rMBP, a new Dell 2412M. My question is: How can I know if the monitor is working well? I have connected it with an HDMI cable and HDMI-to-DVI-converter into the monitor(it doesn't have HDMI input only DVI and DisplayPort). Yes, the resolution is set to the max which is 1920x1200 and under color section in System Preferences->Displays it shows 'Display Profile: Dell u2412M' Is there anything else I can check to make sure it's working as it should? Also, should there be any problems with the HDMI-to-DVI-adapter I'm using? Maybe I should use something else to increase the quality? Here's the link of the adapter I'm using: http://www.ebay.com/itm/DVI-Male-to...V-/220650032623?forcev4exp=true&forceRpt=true Thanks!