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Where the USB-IF messed up - they should have used their trademark to standardize these cables. They should have visibly differentiated charging and data cable
by dwaite 8y ago
Where the USB-IF messed up - they should have used their trademark to standardize these cables.
They should have visibly differentiated charging and data cables, and required all cables with USB connectors at both ends to be rated 100W, and this new 20 gbps (2x2) speed if also supporting data.
Cables with USB-C and another USB port at the end should be required to meet both the power and data requirements of that connector. (so no charging compatibility connectors). USB-C to USB-A should have been restricted to 3.0 only.
Alt modes can use a plain USB-C cable (like Thunderbolt 3 does), but cannot place additional restrictions on the cable if they want USB connectors on both ends.
If the cable has any other connector on the end (such as DisplayPort), it would be up to the creator of the DisplayPort alt mode to indicate if there are any differing requirements.
Likewise if the cable is integrated into a device, it can meet its needs - be charging only, only use USB 2,etc.
This imho would solve nearly all the problems - the problem is that I can pick up a USB-C to USB-C cable and it could literally be one of (at least) six things internally - with no markings to differentiate.