Replacement 420W Power Supply for 3Y Power YM-7421D / SSG520M / SSG550M

420W replacement power supply compatible with 3Y Power models YM-7421D, SSG520M and SSG550M. Designed as a direct-fit spare or swap for systems using these exact model numbers, this unit provides the specified 420W output for 3Y Power equipment.You may also like For X412B-R6 X90-412B-R6 108-00405+A0 — 600GB 15K 3.5.