Worked on the librenms/librenms repository to deliver a targeted bug fix for power supply monitoring on devices running the fs-ruijie OS. Addressed incorrect state mappings by aligning internal logic with the FS-SYSTEM-MIB specification, which resolved issues where healthy power supply units were misreported as absent. Utilized JSON manipulation and SNMP data mapping to update both the monitoring logic and associated data files, ensuring accurate status reporting across network monitoring dashboards. Validated the solution on relevant hardware, collaborating with other contributors to review and refine the changes. The work reinforced data integrity and improved the reliability of PSU monitoring workflows.