Hi @Clive_A Thank you for your reply. I have tested two devices and they both failed. You suggested to do: "single cable that has been tested working, connect both ends to the router". First the...

Hi, We have four TL-SG1016PE switches that won't boot. When I connect the power I can hear the Fan and the power led becomes green. But when I connect a device to a port the port led will stay off...