Best LPS for Xfinity modem

I am trying to get an LPS to run my Xfinity modem, but I don't know what voltage LPS to get. Does anyone know? 7v 9v?

thanks, Jay

chungjh12-22-2021 7:02pm

auxinput Details Discussions Posts This discussion Message User 2,920 posts 12-22-2021 at 08:59pm Copy Comment URL Report Comment Edit Delete If it's not listed on the back of the modem, the power adapter usually has the DC voltage and amperage output printed on it.
auxinput Details Discussions Posts This discussion Message User 2,920 posts 12-23-2021 at 03:48pm Copy Comment URL Report Comment Edit Delete I don't see anything written on the box anywhere. Also, there is no power adapter-just a cord directly into the outlet. Be careful with items like this. If there isn't an adapter, then it is likely the power supply is actually inside the modem and the power cord is just a normal A/C power cord. The AppleTV is another similar item where the switching power supply is inside. That means the AppleTV cannot be upgraded with a linear power supply at all.