Voltage fluctuates. You could put 9v into it and it will be just fine. Hell you can probably put 12v into it and it will be fine. I have a switch at work that only exists to split one ethernet cable into two, and it’s rated for either 5 or 9v, but I’m using a 12v power supply on it and it’s just fine because it’s power conversion is rated for well over that (I think 16v max).
Disclaimer: don’t blindly put higher voltage into a device rated for a much lower voltage. 9v devices will usually tolerate 12v, but not all.
Voltage fluctuates. You could put 9v into it and it will be just fine. Hell you can probably put 12v into it and it will be fine. I have a switch at work that only exists to split one ethernet cable into two, and it’s rated for either 5 or 9v, but I’m using a 12v power supply on it and it’s just fine because it’s power conversion is rated for well over that (I think 16v max).
Disclaimer: don’t blindly put higher voltage into a device rated for a much lower voltage. 9v devices will usually tolerate 12v, but not all.
Ya, I run 18V for for my kid’s 12V power wheel and he can drift with it now.