Guest barneyntd Posted February 2, 2022 Posted February 2, 2022 I recently installed Catalina on my mac pro 3,1 (early 2008) using dosdude1's patcher, and I really like the result except for one thing: none of my usb/serial adaptors work. I have FTDI and CH340 devices which used to work before the install, and still work on a laptop with a supported Catalina install, but none of them work on my mac pro. They appear in /dev when plugged in, and system report shows them correctly, but they won't communicate correctly either using CoolTerm or any device... Read more Source: MacRumors
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