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The old box needs to be inserted into the cable
If you have a long shelf, you need to insert a cable to use it.
New box can be used without cable
Most of the boxes in the market today can support wireless connection. Wirelessly plugging in the network cable can be easily used by connecting WIFI. For example, Tianwei Servo Smart Box, Tmall Box, and Millet Box, which do not need to be plugged into the network cable and directly connected to WIFI. . 
Wired networks are more stable than wireless networks.
Inserting the cable directly, the quality of the network will be more stable than the wireless connection, which is undoubtedly, but the difference depends on the network you use.
Is it necessary to use a smart box to insert a network cable?
Is using a smart box only in the wired network? Or is it stable to use as a wireless network? Take a look ~!