Archive for March 4th, 2020

More than you (or I) ever wanted to know about USB cables

March 4, 2020

By Matthew E. Milliken
MEMwrites.wordpress.com
March 4, 2020

I wanted to add some odds and ends about the computer stuff I’ve been posting about.

First, USB ports on Macintosh laptop computers — that is to say, the MacBook, MacBook Air and MacBook Pro. I wrote on Friday that these machines had had USB Type A ports since the line was introduced in 2006 up until 2017. If you’re a Doubting Thomas, you can click the links in the first sentence of this paragraph, which will lead you to the appropriate pages on the website EveryMac.com.

The MacBook’s USB Type A ports came in two flavors; the receptacles initially conformed to USB’s 2.0 standard before being upgraded to the 3.0 standard. The early version transfers up to 480 megabits per second, while 3.0 can transfer 5.12 gigabits per second, which is roughly 10.7 times faster. By contrast, USB 1.1 — the version that made the Universal Serial Bus a popular connection standard starting in the late ’90s — topped out at a measly 12 megabits/second.

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