Energy-efficient external switching mode 12V DC power supply, for use with BLX4, BLX88, BLX4R, GLXD6, UABiasT, PG4, PGX4, PGXD4, SLX4, SLX4L, P2T, FP33.
 
The PS24US is a direct replacement for the now retired PS23US, PS21US and PS20US power supplies. In order to cut consumer utility costs and set higher standards of energy efficiency, the U.S. Department of Energy implemented a mandate that all external AC adapters be "Level 6 energy compliant." To comply, Shure has updated its power supplies and chargers from level 5 to level 6 energy efficiency.