[ISW-504PT] Check each port LED on the Industrial PoE+ Switch. Try another port on the Industrial PoE+ Switch. Make sure the cable is installed properly and the right type. Turn off the power. After a while, turn on the power again.
[ISW-504PT] Check whether the attached device is not set to dedicated full duplex. Some devices use a physical or software switch to change duplex modes. Auto-negotiation may not recognize this type of full-duplex setting.
[ISW-514PTF(V3)] Check the cable connection of the Industrial PoE+ Switch.
[ISW-504PT] Check the cable connection of the Industrial PoE+ Switch.
[ISW-504PT] After adjusting VLAN DIP switch, reboot the Industrial PoE+ Switch to make the change take effect.