StarTech.com VGA, DisplayPort, HDMI Over CAT5 CAT6 HDBaseT 4K (STDHVHDBT)
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Dual 4K HDMI® HDBaseT + VGA, 3.5mm, and RS232 over Cat Switching Extender Box Transmitter - 4K 60Hz | HDBaseT Extenders | HDBaseT | Audio Video
Amazon.com: MOERISICAL VGA Cat5e Cat6 Extender 300ft Video Repeater Over Ethernet Cable, up to 100m, Sender+Receiver : Electronics