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The charging options are too numerous to list here, but with six devces charging at the same time, you could have one at 65W, two at 45W, one at 20W, and the two USB-A ports sharing 20W. A tiny microcontroller could in theory talk to the PD charger to select 12V, 15V or 20V if available, so maybe an intelligent adaptor that knows what the laptop expects could work. The two USB-A ports are handy as most of us still have devices that require a charging cable connection into this old standard. Each can handle 12W charging but that capacity is shared between the two ports so will be lower if both are in use. This is fine if you are charging one phone or two lower-powered devices such as headphones or watch.
The external device test system (DTS) signals to the target system (TS) to enter debug accessory mode via CC1 and CC2 both being pulled down with an Rd resistor value or pulled up as Rp resistor value from the test plug (Rp and Rd defined in Type-C specification). Say, you plug a charger into a laptop. The charger provides a pull up on the CC line, the laptop will detect that, and if your laptop is USB-C charging-capable, it will put a pull down onto the CC line. The charger will then provide 5 V, and will get ready to talk PD for anything higher than that. As you can see, before higher voltages are possible, you first have to go the 5 V and analog communications way. Put your 5.1 kΩ resistors onto CC pins, get 5 V, and talk the power supply into giving you a higher voltage from there. Microsoft. "Update for USB Type-C billboard support and Kingston thumb drive is enumerated incorrectly in Windows". Archived from the original on 2015-12-10 . Retrieved 2015-12-08.USB Type-C Port Controller Interface Specification | USB-IF". www.usb.org. Archived from the original on 2018-11-03 . Retrieved 2018-11-03. It depends entirely on what the PD charger can put out, how intelligent the adaptor is to be able to select the right output from the PD charger and how tolerant the laptop is of "random" adaptors. Some laptops expect just a dumb power supply, others expect some simple communication or power select method.
USB-Cs flea sized connectors have proven themselves to be really reliable, even in the real world on cheap equipment using maybe counterfeit parts, which is something many connectors don’t have, things like 1/4″ are only reliable with high quality cables. Most any braided C with a strain relief will probably last years. It has four USB outputs in all, making it an ideal device if you have multiple devices to charge. However, not if you have multiple laptops to charge… The USBType-C Specification 1.0 was published by the USB Implementers Forum (USB-IF) and was finalized in August 2014. [4] It was developed at roughly the same time as the USB 3.1 specification. In July 2016, it was adopted by the IEC as "IEC62680-1-3". [5] a b "Universal Serial Bus Type-C Cable and Connector Specification, Release 2.2, October 2022". Archived from the original on 2023-10-02 . Retrieved 2023-10-04.Hollister, Sean (2022-06-06). "Apple will make USB-C accessories ask for your permission to pass data". The Verge . Retrieved 2022-06-12. USB 3.0 Promoter Group Announces USB Type-C Connector Ready for Production" (PDF). 2014-08-12. Archived from the original (PDF) on 2014-08-14. USB-C power supplies always support 5 V and some are limited to that, but support for higher voltages is where it’s at” is challenging to parse. It uses “support” twice, but in two different ways: power supplies support 5 V but also, ?the USB-C standard? supports higher voltages?… I can’t figure that one out and again, it is probably obvious to the non-ignorant. The first “limited to that” isn’t really clear if it referring to UCB-C itself, the relationship of the power supply to USB-C, or what. I’m sure it is not technically correct but more clear to me would be something like “The USB-C standard requires the support of 5V. Some power supplies, however, can provide higher voltages in discrete steps, specifically, 5, 9, 15 and 20V.”
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