New Xfinity Gateway keeps rebooting

I recently replaced my Xfinity Gateway because it would no longer stay powered on. The new gateway will reboot intermittently, but usually within a few minutes of me powering on my computer. It's quite annoying! (Please note, I was having this issue with the gateway that died as well, so I attributed the issue to it being old). That isn't the case now. I was wondering if this was because I have it plugged into a UPS, which is new this year and only a few months old. I do have it in the "always on" outlet, I do not have other equipment that is plugged in to the UPS lose power. Any help would be appreciated.