Last updated: Jun 8, 2026, 10:46 AM
If a wired Toast device shows "No internet connection" or "No network connection," or the Ethernet port has no lights, use these steps to check the cable, port, and switch.
Applies to: Toast Flex terminal, Toast Flex 3 terminal, Kitchen Display Screen (KDS) device, Toast printers, Ethernet switch, Toast router | Permissions needed: Physical access to the affected device, the cable, and any switch or router in the cable path. No Toast Web permissions are needed.
What you'll accomplish: Confirm whether your Ethernet cable and port are healthy, and resolve the most common physical-connection problems that take a wired device offline.
Use this table to match what you see to the most likely cause and the first thing to try.
| Symptom | Most Common Cause | Quick Fix |
| Port has no lights at all | Cable is not fully seated, the device is off, or the switch is off | Reseat the cable, power on the device, and confirm the switch is on |
| Device is wired but shows "No internet connection" | Wi-Fi is still enabled, or there is an internet or router issue | Disable Wi-Fi on the hardwired device, then check your network connection |
| Connection keeps dropping | Loose or failing cable, or the device is jumping to Wi-Fi | Reseat or replace the cable and disable Wi-Fi on hardwired devices |
| Switch has no lights or will not power on | Switch power or the wall jack | Power cycle the switch; if it still will not power on, contact Toast Customer Care |
Ethernet is the cable that carries data between your Toast devices and your network. Toast uses wired Ethernet for stationary devices such as terminals and KDS devices because it is more stable than Wi-Fi and is not affected by wireless interference, which helps keep your devices online.
The cable is physically connected but data is not passing through. This is possibly due to an internet service provider issue. Try turning the terminal off and on again or unplug and then plug in the cables in case the connection is too loose.
No lights on the port usually means the cable is not seated properly, the device is not powered on, or the switch the cable runs to is off.
Expected outcome: A link light appears on the port and the device reconnects. If the port still has no lights, continue with the switch steps below or replace the cable with one you know works.
When a hardwired device shows "No internet connection" or "No network connection" even though the Ethernet cable is plugged in, the device may still be set to use Wi-Fi, or the issue may be with your internet or router rather than the cable.
Expected outcome: The device reconnects to the network. If every device is offline at once, the issue is likely your router or internet rather than a single cable. See Outages and Disruptions: Troubleshoot Internet or Network Connection Issues.
A connection that works and then drops a few minutes later usually points to a loose or failing cable, or a device that keeps switching between Ethernet and Wi-Fi.
Expected outcome: The device holds a stable connection. If devices continue to drop offline while still connected to Ethernet, contact Toast Customer Care.
If the cable runs to an Ethernet switch, such as a TP-Link switch, and the switch has no lights, work through the switch itself.
Note: To add or replace an Ethernet switch, visit Toast Shop.
Expected outcome: The switch lights up and your devices reconnect. If the cable runs into a wall jack and the jack appears to be the problem, the jack may need repair. Repairs to in-wall cabling may require an outside resource such as an electrician, as Toast does not provide service for intensive cable work.
Complete these checks first so Customer Care has what it needs to help quickly:
If the connection still does not work after these checks, contact Toast Customer Care.
Stationary Toast devices should use Ethernet rather than Wi-Fi. Toast recommends a wired Ethernet connection for terminals and KDS devices because it is more stable than Wi-Fi and is not affected by wireless interference, which helps keep your devices online. Handheld devices such as the Toast Go® 2 use Wi-Fi instead.
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