Comments on: USB cable videos https://www.epanorama.net/blog/2019/11/19/usb-cable-videos/ All about electronics and circuit design Sun, 12 Apr 2026 21:37:09 +0000 hourly 1 http://wordpress.org/?v=3.9.14 By: Tomi Engdahl https://www.epanorama.net/blog/2019/11/19/usb-cable-videos/comment-page-1/#comment-1660442 Wed, 20 Nov 2019 07:23:11 +0000 http://www.epanorama.net/newepa/?p=184829#comment-1660442 The USB cable consists of one twisted pair for data and two untwisted wires for powering downstream appliances. Specifically, a full-speed cable contains a 28-gauge twisted pair, an untwisted pair of 28 to 20 gauge power conductors, an aluminized polyester shield, a drain wire, and an overall 65% (minimum) copper braid. Nominal impedance for the data pair is 90 ohms.

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