I've got a unibody mini (A1347) that won't output video from the thunder port to vga using the supplied adapter. I'm updating this for a friend and this have been using the same port and adapter but different VGA cable. Could it be a dodgy cable or maybe the monitor does not support it? Any ideas? I tried booting in safe mode as advised somewhere else. p.s. while I'm asking - what type of HDMI does the mini take? I there a special kind or one size fits all?