Solaar recognizes neither of my Logitech unifying transceivers and their connected devices

Solaar tells me it finds no supported devices, recommends I check for them with lsusb. lsusb returns: Quote:

Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver Bus 001 Device 006: ID 046d:c534 Logitech, Inc. Unifying Receiver

I have keyboards k270 and k360 and mouse m185, all of which Solaar supports.

I asked a similar question 4 years ago. https://www.linuxquestions.org/quest...ces-4175666922 I just installed the latest Solaar. I tried everything responders to that query suggested again.

Does Solaar report only eventual devices, not the transceivers?