Quote from: Yngmar on July 15, 2020, 12:12:54
USB-C power delivery standards only go up to 100W - that's why the power supply can't deliver more than this over USB-C. Dell cannot fix this while remaining compatible with the standard.
If they would cook their own proprietary extension of the standard, it will only work with the Dell power supply (and cable), which loses them one of the key advantages of having USB-C in the first place - a single cable that delivers power and docking connectors.
So I don't expect there will be a "fix" for this. It's just something to consider before purchase.
Yes, Dell is pushing 130 W through USB-C. Yes, you need their supply to do it. If you have a generic 100 W USB PD supply, then you'll be limited to 100 W. The problem is that some configurations of XPS 17 can't reach 130 with a 130 W supply and appear to be capped at roughly 100. While other configurations can. XPS 15 can as well.
It means that their solution has an edge over the generic solutions. The laptop is still compliant and is going to work with the generic solutions (e.g. you can recharge on the go from any USB PD charger, even a phone charger). But they won't give you 130 W. It's up to you. And I imagine the supply is compliant as well. If you connect it to anything else, it's going to behave like a 100 W USB PD supply. So, you can use it to recharge other USB PD devices.