How do I connect Mac Mini to old version iMac Display ?

You need a Mini DisplayPort to Mini DisplayPort cable, which will fit into a Thunderbolt port without any adapters.

(82908)

First off, the iMac must be a late 2009 model or newer

in order to use it in target display mode. If this is the

case, then if it is a non-Thunderbolt version, you would

simply need a MiniDisplay Port->Mini Display Port cable.

If the iMac has a Thunderbolt port, it can only connect to

another Thunderbolt equipped Mac and will need a Thunderbolt

cable. This is the only way it will work.

If the iMac is an early 2009 or older, the only way it will work

is via screen sharing over a network or some other VNC type

package. These models do not support Target Display mode.

Okay, sounded like you wanted to use the iMac as

a display.

To answer your question, it should work as the Thunderbolt

port standard is backward compatible to Display port monitors.

Just for additional info, the reverse is not true, i.e. a Thunderbolt

monitor cannot be used on a Display Port equipped computer.

HI guys, This may seem a estrange question: let's say I hook up a new Mac mini to a new 27 iMac (2013) through Thunderboldt cable. Saying this, can I then plug my HDMI out from Xbox to Mac Mini so I could see my Xbox in my iMac 27?

thanks

Hi, I believe HDMI on the iMac is out only.