Once upon a time, fed...@eyal.emu.id.au <fed...@eyal.emu.id.au> said:
> I think I figured it. The USB cables I have are all providing only minimal 
> connectivity, so only USB2 speed.

This is how a lot of "charging" cables work - they might be able to pass
100W (or more) in power delivery mode, but only USB2 data signals.

New cables/adapters/etc. are all supposed to be marked with the data
rate and power delivery supported.  For example, my recent cable
purchases have 10G/100W and 40G/240W marked.  But there's no telling
with previous cables other than to plug them in with a variety of
devices and see what you get.

The data speeds are also confusing because of marketing... there's "USB
3.0" which does 5G (but was then retroactively renamed "USB 3.1 Gen 1"
and then "USB 3.2 Gen 1x1").  "USB 3.1 Gen 2" (aka "USB 3.2 Gen 2x1") is
10G, and "USB 3.2 Gen 2x2" is 20G.  And then "USB4" (no space) gets even
more modes and names.  Their next renaming attempt is to stop all the
version games and go with speeds (like they should have done from the
start), so "USB 5Gbps", "USB 10Gbps", "USB 20Gbps", and so on.

-- 
Chris Adams <li...@cmadams.net>
--
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