Just was wondering if anyone has had this issue as well. I'm not stuck but my co-worker (not a developer) couldn't get the USB-A on a mac dongle to work. I just wanted her to use the Serial Monitor - as I implemented commands the user can type is to do an OTA update or other things. So they just needed a Serial Monitor (and this issue crept in).

Thanks.

A teammate still cannot get the USB-A to work on her MacBook. (I'll mention the dongle issue stated below).

Now for the strange part: After testing the PC, I plugged the same USB-A into my Mac and it was working. So I thought the PC somehow altered the M5Atom.
But trying a brand new M5Atom - it works on PC, but not on the MacBook. (So that altered theory was debunked).

It's strange that looking at a post here from 2020 - the problem was reversed: the USB-A was the only one that worked on MacBook.

UPDATE different dongle works

I just tried a non apple dongle, and it is working. Most interesting.

UPDATE 2: apple dongle works sometimes

Strange, after working with that non-apple dongle, I re-tried the apple dongle,
and it works now (on this M5Atom).

SO it's not a uniform problem.

Maybe the MacBook get's woken up after and recognizes that device once. I just tried a brand new M5Atom - and it didn't recognize it. Then started to recognize.

does Atom works on diff machine? I mean non Mac

Recently with the M5Atom, only the USB-C to USB-C cable from my MacBook is recognized as a valid PORT. If using USB-A the port will not show up.

Some teammates were trying to just use the Serial Monitor- and did not have the USB C - USB C cable. Although in this case, they say the PORT shows up, but is just not selectable. I haven't seen that - it just doesn't show up for me.

I have tried many different USB-A to USB-C cables, and none work.

It would be nice for M5Stack to chime in and let us know what works.

@ajb2k3 To clarify: are you saying that somewhere in the Core3SE documentation it says that USB-A is power only? Could you link that or point me to it? I clearly need to dig into the hardware a bit more :)

@Juraj I can share my issue and solution using an M5Core3SE and a Win11 computer.

When I connected the M5 to the USB-A port on the PC using a USB-A to USB-C cable, I got power, but no COM ports.

When I connected the M5 to the USB-C port on the PC (using a USB-C to USB-C cable), BOOM: COM port.

I haven't dug into it to see particularly why (best guess right now is the M5 connection uses both the legacy USB 2.0 connection as well as the SuperSpeed connection: one for the terminal and one for the M5 program data stream?)

Hope this helps.

so you are using 2 different cables and its ok on just one...no issue with pc, no issue with M5..check with dofferent A to C USB

When I connected the M5 to the USB-A port on the PC using a USB-A to USB-C cable, I got power, but no COM ports.

When I connected the M5 to the USB-C port on the PC (using a USB-C to USB-C cable), BOOM: COM port.

I haven't dug into it to see particularly why (best guess right now is the M5 connection uses both the legacy USB 2.0 connection as well as the SuperSpeed connection: one for the terminal and one for the M5 program data stream?)

Hope this helps.