Is it possible to connect 3 external displays (for a total of 4, including the built-in 5K display) to an iMac Retina 5K, 27-inch, 2017? I have the Radeon Pro 580 with 8GB of VRAM.
I do not need the external displays to be high resolution. In fact, all three of them need to connect via VGA using the following resolutions:
- External displays 1 & 2: 1920x1080
- External display 3: 1280x720
If necessary the 3rd display could be a different connection type (e.g. DVI) and/or resolution. The specs for external displays 1 & 2 are not negotiable.
I've reviewed this iMac's specs which seem to say only 2 external displays are supported via the two ThunderBolt 3 (USB-C) ports. However in my research about ThunderBolt it seems like it should be possible to run two simple displays off of one port.