New answers tagged cinema-display
The USB cable is only for the ports in the back of the display. If you don't intend on using them, you don't need to plug it in. USB 2.0 has a max cable length limit of about 5 meters. You could get an extension cable that keeps you below that limit and it should make things work smoothly.
I've never heard of a DisplayPort-based external TV tuner. But there are HDMI-based TV tuners available, and HDMI-DVI adapters are cheap. Single-link DVI supports 1920x1200 at 60 Hz, which is higher than any digital broadcast TV standard, so that wouldn't be your limiting factor.
Top 50 recent answers are included