Radio Talaat HDMI Splitter 1x4, 4K at 30 Hz, HDMI 1.4b, Black, RT-HDSP-104

One HDMI input, four identical outputs, all live at the same time. This is the size most Egyptian cafés and small showrooms actually need: one satellite receiver or one media player driving four screens around the room with no visible delay between them. Inside is a powered distribution amplifier that buffers and re-clocks the source before copying it, so the fourth screen looks the same as the first even at the end of a long cable run. It runs HDMI 1.4b with 3.4 Gbps per TMDS channel, which is 10.2 Gbps of total bandwidth, and carries up to 3840 × 2160 at 30 Hz or Full HD 1080p at 60 Hz, with 3D and full bitstream audio pass-through. HDCP 1.4 keeps protected sources working. Give it a solid 5 volt supply, use the shortest good-quality HDMI cables you can on the outputs, and connect all four screens before powering the source, because the unit reads the display capabilities once at handshake.