Hi Velinpetrow, if the Cisco EPC2202 is only a Modem, I think you just connect it to the R470T+ directly and then choose the Dynamic IP in the R470T+. But as you have two lines, you should configure...

why not contact the ISP for help? It is more efficient.

Have you try to change a cable or change a port? What if you connect your device directly to the front router or other device?

Hi，the default IP address of the switch is 192.168.0.1, you must change the IP address of the config PC to the same subnet so that you can login to the managed page. U can connect only one PC to the...

what SFP do you use? I think the problem may caused by the SFP rather than the switch.

there is a FAQ in tplink's official website, you can refer to it for help http://www.tp-link.com/en/faq-992.html