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Why Did My Router Say an Unknown MSI Laptop Joined by Ethernet?

August 23, 2026 4 answers
Asked by VelvetPine42
I received a notification from my Xfinity internet equipment saying that a new MSI laptop had connected to my network through a wired Ethernet connection. I don't own an MSI laptop, and I checked the modem and router in the closet without finding any unfamiliar device or cable connected. The router's active-device list only shows my TV, work laptop, desktop, and phones, and the supposed MSI laptop doesn't appear there or in the offline-device list. Could this be a false notification or a device-identification error?
Hardware MSI laptop router alert unknown device Wi-Fi security wired connection Xfinity network

Answers

QuietRaven58
This sounds more like an app or provider-side glitch than an intruder. If the device isn’t listed as active, isn’t connected by cable, and your known devices are all accounted for, there may not be anything physically connected. Still, changing the Wi-Fi password and confirming that WPS and remote administration are disabled would be reasonable precautions.
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MangoOrbit7
If there’s genuinely nothing plugged into an Ethernet port, then a new wired device couldn’t have connected that way. The notification may have been generated incorrectly, especially since the device doesn’t appear in the router’s actual client list.
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LimeComet6
I received the same kind of alert recently, which makes a bug or recurring false alert seem plausible. I’d watch the router’s real-time device list and review the event logs if available. If the alert keeps appearing without a matching device, support may need to investigate the notification system.
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CobaltHawk31
The name shown by the app may not be reliable. Routers and provider apps identify devices using information like the MAC address, hostname, or manufacturer lookup, and an existing device can occasionally be labeled as MSI or appear as a new device after its network identity changes. Check the router’s connected-device page directly rather than relying only on the notification.
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