What power supply does the 4G03 router require?
The 4G03 requires a power adapter with an input of AC 100V–240V at 50/60Hz and an output of DC 9V at 1A. The power adapter is included in the package contents. (Page 4)
From the official Tenda 4G03 N300 Wifi 4G Lte Router manual, page 4
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