52840-DK does not show up on USB subsystem, cannot connect for programming

Mac with M1 silicon, installed latest Mac-specific nRF Connect for Desktop (5.02) and latest command line tools: 10.24.2 macOS

DLL error in GUI app:

Command line fails:

% jlinkexe

SEGGER J-Link Commander V7.94e (Compiled Jan 15 2024 15:15:51)

DLL version V7.94e, compiled Jan 15 2024 15:15:39

Connecting to J-Link via USB...FAILED: Cannot connect to J-Link.

I have tried every variation of rebooting, reinstalling etc. Nothing works. What is the key to getting the device to enumerate via USB?

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