Xfinity is the brand name of one of the leading ISP’s in the US --- Comcast Communications. Xfinity provides its users with a cableless modem and modern wireless routers. These routers have different indicator lights that denote the status of the router. Please read the following section to know why the Xfinity Router Blinking Yellow and how to fix it.
When a router is turned on, and as it begins to transmit the signals over a network, the network speed is indicated by different colors. The yellow light means that the router’s transmitting speed is 1/100 Mbps. Generally, the router blinks green, which indicates the router works with the transmission speed of 1000 Mbps. If your Xfinity router seems to be blinking yellow, then perform the solutions given here to solve the issue.