On Thu, Mar 03, 2022 at 03:48:37PM -0600, Eddie James wrote: > It's a pretty generic pl2303 device and doesn't have to be used for UPS, > but that is our use-case. Here is a page with some detail about the > device: > https://www.ibm.com/docs/en/power9/9009-22A?topic=power-uninterruptible-supply Could you please also post the output of "lsusb -v" for this device to this thread for completeness? This may be needed to improve the current type detection for newer pl2303 devices. Do you know which type of PL2303 you use? Thanks! Johan