Black Box Emerald EMD4000R KVM Console - 1 Computer(s) - 1 Remote User(s) - 32808.40 ft Range - 4K - 4096 x 2160 Maximum Video Resolution - 1 x Network (RJ-45) - 4 x USB - DisplayPort - 120 V AC, 230 V AC Input Voltage - Desktop - For PC, Mac, Linux, Sun - TAA Compliant: