As the new iMac presented by Apple are being tested, new features or the absence of others are discovered. In this case we will inform you that the Cupertino have decided to eliminate the option that Let's use the screens of the new iMac as external monitors.
Specifically, we are talking about the possibility that non-Retina iMac had of being able to be used as screens for MacBook or Mac mini. This mode of operation is called Target Display Mode.
When the Thunderbolt connection came to the iMac, those of the bitten apple had the possibility of being able to use the screens of the iMac not Retina as external screens for the notebooks or the Mac mini. There was even the possibility that if the iMac where we connected the Mac mini a keyboard and a mouse were connected via Bluetooth, these were now controlled by the Mac mini.
Now, with the arrival of the new Retina models for both the 21,5-inch and 27-inch diagonal the Target display mode has been silently removed. Yes, Apple sometimes silently adds and removes functionality with the introduction of new models, which are not known until users start napping.
This decision not an apple craving and it is rather an obligation imposed by the computer's own hardware and the needs imposed by a screen that has a resolution of 4K or 5K. That is why until the computers that are going to connect to those iMac Retina are not able to move such a number of pixels We will not see this option implemented in iMac again.
