Hi Manfred, Maybe it has something to do with the onboard network card in our computers? I am using the TP551 with an desktop computer and the onboard NIC is an Intel 82579V. I am gonna test a...

Hi, Not posting a real solution to your problem but I am stuck also with the same trouble. The only thing that helped me so far is placing a switch between my computer and the TP551 unit. But then I...