I hope this doesn't get too complicated. I am trying to get 3 displays to work from my mac mini. I'll outline the confiugration I have and would like to know what I'm doing wrong because in theory I suppose what I have should work. Though I freely admit connectivity is not an area of expertise for me. From mac mini TB port I have a TB cable going into the TB port on the back of a 27" TB display. The 27" TB display main power/TB cable is connected to a Sonnet echo expasnsion chassis in the bottom TB port. The 2nd display is a 24" LED apple display with the dreaded MiniDP connector, which is connected to the top TB port on the Sonnet Chassis. 3rd Display is an LG 27" display with HDMI connectivity. I have an HDMI cable going from the back of this monitor into the mac mini's HDMI input. The result is that the LG monitor won't find a signal, and this is what I'm trying to solve and after a couple hours I'm resorting to the forums because it's pissing me off. any advice would be greatly appreciated. Note: I've got at hand pretty much every adapter that's been made for monitors (friend's house is a production studio w/zillions of them) so if there is a way to overcome that involves adapters and re-routing of cables I think I'm good to go.