I agree on the fact that it’s confusing. There isn’t a great way to tell what a charger, cable, or device supports by eye.
However, there is a reason that vendors don’t just all do 240W 20Gbps — because it would make chargers, cables, and devices cost more.
I’d personally rather just have two color-coded labels, one for maximum power supported and one for data rate (including no data support), and require that to be on cables and devices and chargers.
Require that chargers support all power levels up to the maximum they’re rated for. That’ll add some charger cost, but simplify things.
Some devices require a minimum power. While I find that obnoxious for devices that just charge a battery, some devices that are directly powered by USB have to do that. Put that on the device by its port as well, as a third label.
Also, many chargers with multiple ports have limits on the overall power they can provide, will reduce the PD power profiles on one port if devices are plugged in on others. I’d like to have a standard way of indicating this.
EDIT: I’d also kind of like to have ratings for how clean power provided by a given source is guaranteed to be. USB power can be very dirty, and I’ve run into issues where audio amplifiers use USB power and audibly leak that noise into the output signal.
I agree on the fact that it’s confusing. There isn’t a great way to tell what a charger, cable, or device supports by eye.
However, there is a reason that vendors don’t just all do 240W 20Gbps — because it would make chargers, cables, and devices cost more.
I’d personally rather just have two color-coded labels, one for maximum power supported and one for data rate (including no data support), and require that to be on cables and devices and chargers.
Require that chargers support all power levels up to the maximum they’re rated for. That’ll add some charger cost, but simplify things.
Some devices require a minimum power. While I find that obnoxious for devices that just charge a battery, some devices that are directly powered by USB have to do that. Put that on the device by its port as well, as a third label.
Also, many chargers with multiple ports have limits on the overall power they can provide, will reduce the PD power profiles on one port if devices are plugged in on others. I’d like to have a standard way of indicating this.
EDIT: I’d also kind of like to have ratings for how clean power provided by a given source is guaranteed to be. USB power can be very dirty, and I’ve run into issues where audio amplifiers use USB power and audibly leak that noise into the output signal.