Sindoh M403 - Manual (Page 59)

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Preparation for Using the Device
1
Important
- In general, it is not recommended to connect both network cable and Wi-Fi module to
the device at the same time. If wire/wireless data enters the device at the same, a problem
can occur.
- If the device is connected to the network via the network cable, remove the Wi-Fi module
and vice versa.
- Check if the device is off when installing or removing the Wi-Fi module.
4
Check if the LED is on when the Wi-Fi module is connected.