The USB data lines D+ and D- are a differential pair [1], cables should definite... | Hacker News

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unwind on Feb 2, 2020 | parent | context | favorite | on: USB, Java take center stage at Comdex (1996)

The USB data lines D+ and D- are a differential pair [1], cables should definitely be twisted. On PCBs they need to be length-matchef, too.

[1]: http://www.usbmadesimple.co.uk/ums_2.htm

zokier on Feb 2, 2020 [–]

Righto, that was me going quite wrong. Doesn't change the overall point though, 10baset still requires twice as many conductors as usb, because it needs two pairs (rx and tx) whereas usb only needs one

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