Are you using USB3 keys? Maybe too modern? I will try a USB3 key as well.
I don't have usb3 keys, but i am 15 years old and even recent ones (not usb3).
OK I was wondering, some newer USB devices may have incompatibility problems with older USB ports.
How are you formatting the keys? I have just plugged a key and I was surprised to see a "removed" message. It wasn't recognized.
Turns out I had used that key for a different purpose and it was formatted with a Unix (FreeBSD) filesystem. After formatting it as FAT. Do not use exFAT, it seems it doesn't work.
@tautech
Note to Siglent: Why don't you add a message warning "incorrect format" instead of just ejecting it and not letting the user know the reason? It can be a hardware problem (even bad USB connector contacts) or a format problems. It would be helpful to know the reason! It would be good to have a format option in the "Utility" menu so that you can make sure the drive is properly formatted.
The drives I have tried work, all of them with a caveat. I have two apparently identical Kingston Data Traveler G4 and one of them shows a "USB flash drive removed" before it gets detected. The rest (more Kingston drives, a very fast drive supplied with a Juniper router, etc) hace worked.
The key, probably, format.
- MBR partition table. It supports GUID but it's better to be safe.
- FAT format,
never exFAT.
How are you formatting the drives? Also, the larger I have tried is 32 GB.
My scope runs UBoot version 5-0, FPGA 2019-06-12, Hardware version 0c-01, Serial SDS1EBAX1R1809.
And I forgot. You can try whether the USB interface works by plugging an optical mouse. If the mouse doesn't emit light probably the USB port is broken/defective. I have tried with an Apple mouse and despite not being recognized it was powered on (red light underneath).