Re:USB inventor explains why the connector was not designed ...
by lxgr on Monday October 09, 2023 @04:51PM
(#37825345)
> There's going to be video-only cables
There is no such thing for USB-C.
> low-voltage only cables
As far as I know, only the amperage is negotiated; every compliant cable needs to support at least 20 V.
And even then, the minimum is also 3 A, which allows for 60 W to be carried on even the cheapest cables – enough for many use cases. I actually like having lighter and more flexible cables for most of my devices.
> The connector is symmetrical but the pins aren't. You can see a wiring scheme of how symmetry is handled [1]; literally manufactures are going to cheap out and not do that and you have 1-way USB-C cables without any kind of orientation markers.
With all the many USB-C headaches I’ve heard of (and only very rarely encountered myself), I’ve never seen that happen.
The most common problem must be using a USB 2 only cable for a use case that requires USB 3 speeds and/or video.
There is no such thing for USB-C.
> low-voltage only cables
As far as I know, only the amperage is negotiated; every compliant cable needs to support at least 20 V.
And even then, the minimum is also 3 A, which allows for 60 W to be carried on even the cheapest cables – enough for many use cases. I actually like having lighter and more flexible cables for most of my devices.
> The connector is symmetrical but the pins aren't. You can see a wiring scheme of how symmetry is handled [1]; literally manufactures are going to cheap out and not do that and you have 1-way USB-C cables without any kind of orientation markers.
With all the many USB-C headaches I’ve heard of (and only very rarely encountered myself), I’ve never seen that happen.
The most common problem must be using a USB 2 only cable for a use case that requires USB 3 speeds and/or video.