Mid-2011 iMac 21.5 inch
CPU: Intel(R) Core(TM) i7-2600S CPU @ 2.80GHz
RAM: 8.00 GB
Right now, I connect an external monitor to my iMac using the one thunderbolt port that I have. Is it possible to connect a second external monitor? If so, how?
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Although I am not using multiple monitors on my new Macbook Pro 15" (2015), I purchased CalDigit's ThunderStation 2 model. That product connected to your iMac will provide support for thunderbolt / mini displayport passthrough as well as an HDMI port. So, you should be able to connect 2 external monitors to your iMac via this device. => http://www.caldigit.com/thunderbolt-2-dock-TS2/index.asp