Sindoh A610dn - Manual (Page 38)

Printer Installation
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- Do not connect both the network cable and Wi-Fi module to the device at the same time.
Due to the nature of network communication, problems may occur if data enters via wire/wireless data.
Using both connections is not recommended for this product.
- If the device is connected to the network by the network cable, remove the Wi-Fi module.
To use wireless network using the Wi-Fi module, disconnect the network cable.
- Check if the device is off before installing or removing the Wi-Fi module.
Important