Is there a log which shows the time when USB devices are connected and disconnected in Sonoma?

gernophil wrote:

Are you sure about this?

Absolutely certain.

Because the links I posted state that these logs have existed earlier at least.

Apple regularly re-writes major parts of the operating system. The logging subsystem was re-done a few years ago. You are welcome to look at it if you want. Just be careful. More than one person on these forums has literally gone insane looking at the logs. I'm not exaggerating.

Just launch Console and click "Start streaming". Then, connect your USB device. Then, go back to Console and "Pause streaming". Do the same for a disconnect. Depending on how fast you are to switch apps and click the button, you might have, maybe 40,000 log entries to scan. Consider ordering a pizza or DoorDash. You're going to be at this all night long.

gernophil wrote:

I just want a log that shows at what time a specific USB device was connected and at what time it was removed again. Just for diagnostic purposes.

No such log exists. You would have to write your own.

gernophil wrote:

There was a nice manual for showing the connection time of USB devices in 2015 using the system.log. However, the system.log does not show contain this info anymore. Is this stored in a different log now?

For reference:

Is there a system log which displays whic… - Apple Community

Is there a log that records when a USB de… - Apple Community

What is it, specifically, this going to achieve even if such an entry is found somewhere is some log.

Normally when a new USB Device is attempting to connect to an Apple Silicon Laptop

The user would be presented as per this Apple Support Article

Refer to Link Below from Apple on this very topic

If your Mac asks you to allow an accessory to connect - Apple Support

Excerpt from link above

When you use a new or unknown USB accessory, Thunderbolt accessory, or SD card with your Mac laptop with Apple silicon and macOS Ventura or later,

Welcome

In Console

Have attached a USB Drive multi times

Each time looking in any of the available files.

Have yet to find a specific entry for a Drive that was Successfully attached or dis-attached

There might be something showing up If there was failed Mount or unexpected Dis-Mount

That I am sorry to say I can not provide

Reason, all drive successful Mount and Dis-Mount

Perhaps a more learned contributor can point you in the right direct 🤞