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NelsonMinaryesterday at 6:53 AM1 replyview on HN

lsusb will get you this info in Linux, but I like the idea of a little wrapper tool to make the output easier to parse.

480 vs. 5000 Mbps is a pernicious problem. It's very easy to plug in a USB drive and it looks like it works fine and is reasonable fast. Right until you try to copy a large file to it and are wondering why it is only copying 50MBytes/second.

It doesn't help that the world is awash in crappy charging A-to-C cables. I finally just throw me all away.


Replies

lxgryesterday at 6:57 AM

I remember hearing it’s even possible to plug in a USB-A plug too slowly, making the legacy pins make contact first, which results in a 480 Mbps connection – despite the cable, the host, and the device all supporting superspeed!

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