As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING DESCENT, THE LEFT-SEAT PILOT DETECTED AN ELECTRICAL BURNING ODOR ORIGINATING NEAR THE LEFT-SIDE USB CHARGING PORT. SHORTLY AFTERWARD, THE USB CHARGING PORT STOPPED FUNCTIONING. THE PORT HAS ALSO PREVIOUSLY EXHIBITED INTERMITTENT OPERATION, PERIODICALLY LOSING POWER WHILE IN USE. CORRECTIVE ACTION: REMOVED AND REPLACED LH COCKPIT USB CHARGING PORT. OPS CHECK GOOD. ALL WORK COMPLETED IAW AMM 24-66-01-000-801.