Replacement YM-7421E 420W DC Switching Power for 3Y SSG520 & SSG550

Replacement DC switching power unit YM-7421E, rated at 420W and made for use with 3Y SSG520 and SSG550 equipment. Provides stable, efficient DC power for compatible systems and serves as a direct swap or spare for setups requiring a YM-7421E 420W DC switching power supply. Confirm compatibility with your SSG520/SSG550 model prior to installation.