[rb808]

I dont think DC wall socket is the problem - its the small electronics that each have their own power pack.

Ideally to me every led lamp, settop box, alarm clock, phone, laptop would not come with a power supply box. It would just take a USB cable or similar standard. Then you could buy a good quality power supply adapter that you can reuse for lots of products - and avoid the abundance of random adapters everywhere.

[atonse]

That is sort of happening already. A lot of devices are just using USB standard for their power supplies.

I suspect that with PD, that allows even lamps to negotiate that they need more power, maybe?