LENKENG 3x3 HDMI Videowall Controller with 1x HDMI In & 9x LENKENG 3x3 HDMI Videowall Controller with 1x HDMI In & 9x HDMI Out. Up to 4096x2160@60Hz Res Input, Supports 1080P Output. RS-232 Control, 3.5mm L/R Channel and S/PDIF Audio Out, Plug & Play