This tip will show you how to connect Epson CH-LS12000B to wired network. To connect the projector to a wired local area network (LAN), use a 100BaseTX or 10Base-T network cable. To ensure proper data transmission, use a Category 5 shielded cable or better.
In this case, you can successfully connect your projector to the network.
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Epson CH-LS12000B Computer Connecting Guide