Modem > old router(WAN port)
old router(Lan port) > XR-10 (WAN port)
(IF CONNECTING OVER wifi 5ghz to XR-10, 866/866 link speed(shown in windows settings ethernet properties or control panel > network > SSID, in this setup but limited to 20-50mbps on speedtest))
XR-10 (LAN port) > computer (eth)
(link speed 1000/1000 Mbps or 1.0Gbps depending where you look, limited to 50-100mbps on speed test)
XR-10 (WAN port) > Computer (eth)
(link speed 100/100 Mbps, or 100.0 Mbps depending where you look)