my old iMac 27" is late 2009 and has a Mini Display Port but my new one has none (but USB 3.0 and Thunderbolt).
I am using the Mini Display Port of the old one already for my TV to play my videos directly there.
I assume, that I have to get an adapter (which one? via Thunderbolt?)) for my new Mac to connect with my old one. Furthermore, because I want to keep my Mini Display Port from the old Mac for the TV connection, is there an adapter to plug in 2 or more Mini Display Ports?
Best would be, if I can connect from my new Mac to both, the TV and the old Mac ??
Thanks for your help
Thunderbolt has minidsplayport functionality in it.
Purchase a Mini Displayport to Mini displayport Cable and plug 1 end into a thunderbolt port of your new iMac and the other end into the Mini Displayport of your old Mac.
Then put your old iMac into target display mode using these methods:
- Here for slightly older iMacs.
And it is as simple as that.
If you still want to use your TV as another screen, plug the minidsplay port->HDMI cable into the other thunderbolt connection of your new iMac.
You might want to get a thunderbolt hub, since you will be using both ports on your new iMac this way.