Logitech M185 Faq page 47

If you don't allow KEXT loading, all devices supported by LCC will not be detected by
NOTE:
software. For Logitech Options, you need to perform this operation if you're using following
devices:

T651 Rechargeable trackpad

Solar Keyboard K760

K811 Bluetooth keyboard

T630/T631 Touch mouse

Bluetooth Mouse M557/M558
 +Unifying devices not detected after macOS 10.12.1 Sierra update
We are aware that after updating from macOS 10.12 Sierra to macOS Sierra 10.12.1, Logitech
Options software does not detect supported Unifying devices on some systems.
To fix this issue, unplug the Unifying receiver and then plug it back into the USB port. If
Logitech Options still doesn't detect the device, you may also need to reboot your system.