Path: ...!3.eu.feeder.erje.net!feeder.erje.net!eternal-september.org!feeder3.eternal-september.org!news.eternal-september.org!.POSTED!not-for-mail
From: Dan Purgert <dan@djph.net>
Newsgroups: comp.misc
Subject: Re: No More USB-A Ports
Date: Sun, 16 Jun 2024 13:03:05 -0000 (UTC)
Organization: A noiseless patient Spider
Lines: 34
Message-ID: <slrnv6tok9.nch.dan@djph.net>
References: <v40f7k$2edfj$1@dont-email.me> <6664e474@news.ausics.net>
Injection-Date: Sun, 16 Jun 2024 15:03:05 +0200 (CEST)
Injection-Info: dont-email.me; posting-host="262187fd425d0c91a69a2f218ddd7684";
	logging-data="73306"; mail-complaints-to="abuse@eternal-september.org";	posting-account="U2FsdGVkX1/JrJLiOsQbUi10HNu14E8SHY50nCCRcE8="
User-Agent: slrn/1.0.3 (Linux)
Cancel-Lock: sha1:0QphrujDN3sbGhF9Qusjzo37A1s=
Bytes: 2418

On 2024-06-08, Computer Nerd Kev wrote:
> Lawrence D'Oliveiro <ldo@nz.invalid> wrote:
>> The machine I'm using right now, which is just about a year old, is
>> practically overflowing with USB-A ports. But it only has one USB-C
>> port. How long has USB-C been around?
>
> In my house just a couple of weeks - I used my first USB-C device
> last month, via a cable to a USB-A plug. Another flimsy little
> connector that I'm likely to break, like devices with MicroUSB
> connectors, when I accidentally catch the cable with my arm and
> yank them about.
>
> The USB-PD standards are interesting. Upon first reading about them
> I was keen to find/design a device to just break out the outputs
> and have a mini variable power supply for general use, even battery
> powered from one of those power bank devices. But as with most
> things USB3/C it turns out the power supplies that are actually
> available only implement the bare minimum range of voltage outputs
> that the manufacturers think most people will need.

Mine here are all 5/9/15/20V.  I "think" they're missing only 1 or 2
voltages, but that's enough for my laptops and cell phones.  Not really
sure what'd ask for 9 or 15 volts ... 

Bear in mind that it's ONE output, and you negotiate the voltage on the
wire as part of the connection handshaking (IIRC CC1/2 or maybe
something more active later on, been a bit since I read up on how PD
works)


-- 
|_|O|_| 
|_|_|O| Github: https://github.com/dpurgert
|O|O|O| PGP: DDAB 23FB 19FA 7D85 1CC1  E067 6D65 70E5 4CE7 2860