Please include in SLES 15.5 new Ledmon package.
Release 0.96 is available in repo: https://github.com/intel/ledmon.

Also please note that before “2022-09-30 SLE 15.5 Code drop deadline”, we may release next Ledmon version. New expected version, will contain support for empty slots blinking (using VMD controller or NPEM). This new feature gives possibility to set/get led not only for existing block devices but also for empty slots (using PCI address). New release will also contain separation of Ledmon and Ledctl (which will resolve some of defects, related to changing led state by Ledctl, when Ledmon is on).