DM-41X USB Disk Missing

[GerryS]

Great, thank you for your responses. I found an old cable in my car and tried it and this one works but only on my Macs, not on the HP laptop with Win 10. I had read about the micro USB being recessed too far so I took the back off of both the 41X and the 42, but it made no difference. The two macs that I now get a USB disk are a very old Mac Pro (Early 2008) running OS version 10.11.6 and my year old M1 MBP running Monterey 12.3.1.

It's a very strange and inconsistent issue and I'm afraid that the USB disks will stop working unexpectedly. I've ordered 3 of the USB cables suggested by Bob to see how this affects this issue. Also, I do have a Dell XPS 9710 laptop but the SSD died in it over a month ago. I requested repair but they couldn't find parts, so they have shipped me a refurbished unit that has just arrived. I will give that a try as well.

Thanks again,
Gerry