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The Xfinity Internet equipment can be a little tricky to understand and operate, especially if you are a new customer. However, even with all the different components and lights on the Gateway device, the process is fairly simple – which just goes on to show Xfinity’s commitment to its users. In this article, we talk about a very common issue: the US/DS light blinking on the Xfinity modem. So let us begin!

What is a US/DS Light on a Modem or Router?

US/DS is just an easy short form for an upstream and downstream connection. A US/DS light, hence, shows how the upstream and the downstream connection is holding up on your network. A solid light on the US/DS usually means that the connection is well established and the network is smoothly sending and receiving data.

This light is available on all modems and router devices regardless of the model and make. It gives you an idea of how your internet network is faring at any given moment.

Why is the US/DS Light Blinking on My Xfinity Modem?

Now that you know what the US/DS light is on an Xfinity modem, let us take a look at why it sometimes malfunctions. If you find the US/DS light blinking on the Xfinity modem, it is probably because it is trying to establish a connection to the internet. Despite the device’s attempts to set up a link to the web, it is failing repeatedly. A flashing or blinking US/DS light on an Xfinity modem primarily shows the failure of an internet connection to form which could be due to loose cables, outages, etc.

Troubleshoot a US/DS Blinking Light on Xfinity Modem

If your Xfinity internet equipment is having an issue such as this, it just means that there is something wrong with the connection. It could be a problem at your end, the provider’s end, or perhaps just some hardware issues. Whatever the case, most of the fixes are pretty simple and straightforward. Here is a list of some of the ways you can troubleshoot a blinking US/DS light on an Xfinity modem.


A blinking US/DS light on an Xfinity modem may seem like a big problem but it really isn’t. All it shows is the device is not able to connect to the internet – which can be due to a number of reasons. Just do a primary check to see that everything on your end is working perfectly, and if the problem continues, reach out the Xfinity technical support for further assistance.

Frequently Asked Questions (FAQs)

How do I contact Xfinity customer service?

If you need to purchase an Xfinity Internet or TV plan or upgrade your service tier, you can reach out to Xfinity customer service at 844-207-8721.