Hello,

a friend needs a new 24-port switch and would like to gradually switch to Omada in the future.
Currently, an SG2428P or SG2428LP would be among the top choices and within the price range 
My friend isn't currently using any PoE devices, but two access points are expected soon.
Since the switch will be running 24/7, power consumption would be of interest to me.
Unfortunately, TP-Link provides no information about this on their website 
I've done some research, but I'm wondering if that's true?

SG2428P use 15,6 Watts in Standby
SG2428LP use 8,9 Watts in Standby

Is this information correct?
Why does the SG2428P require 6.7 Watts more power without any PoE devices in use?
That's almost double the power consumption.
Why does it need so many more watts?

Thanks :)