Blackmagic UltraStudio 4K
UltraStudio 4K has a rack based breakout box design with the latest high performance 6G-SDI video technology, and is perfect for equipment racks, post production suites or flyaway kits! UltraStudio 4K even supports ProPresenter's Alpha Keyer Module for key/fill outputs or downstream keying (up to 1080p60). Only $995 (NOTE: requires a thunderbolt cable, which is not included)
** This Blackmagic product is specifically made for Thunderbolt equipped Macs.