The KanexPro EXT-4KFIBERPRO is an HDMI 2.0 extender set engineered to extend 4Kx2K at 60Hz with 4:4:4 Chroma Sampling rate and HDR up to 984ft. (300m) with zero latency. Compliant with HDCP 2.2, the set includes one transmitter and one receiver via two- single mode optical fiber ports or two OM3/OM4 multi-mode fiber cables. Front panel Dip switch allows SPDIF ports on both the sender and receiver to function as ARC (Audio Return Channel) mode or normal audio support for downstream devices. This extender can also be controlled over fiber via bi-directional IR and RS-323C.