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by michaelt
2875 days ago
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Why do keyboards have hard-wired cables anyhow?
Captive cables only need enough copper to supply enough current for the device they're built into.Separate cables, OTOH, need enough copper for 500mA with a certain voltage drop to be USB standard compliant. Means 24AWG or bigger for a 2m cable [1]. That's why your keyboard, mouse and webcam have skinny cables while other USB cables are much thicker. [1] http://cdn2.goughlui.com/wp-content/uploads/2014/10/USB-Cabl... |
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