The CKH901 4k60 kvm extender can extend HDMI video and audio signals, RS-232, USB 2.0 devices at the distance of up to 120meters (394 feet) via a single Cat 5a/6 cable. The system support resolution up to 4K video at 60 Hz. For point to point transmission and point to many transmission with gigabit switches. Applications include keyboards, mice, microphones, hard drives, touch screens, scanning guns, and other USB 2.0 devices. Video resolution is 3840*2160@60HZ and does not degrade when extended to the full 120-meter distance.