Replacement 36W AC Adapter for Western Digital External Hard Drives My Book World Edition II (blue rings): WD20000D033, WD15000D033, WD10000D033, WDG2NC10000N, 	WDG2NC15000N, WDG2NC20000N, WDG2NC20000, WDG2NC15000, WDG2NC10000, WDG2NC10000E, WDG2NC15000E, WDG2NC20000E, WDG2NC10000A, WDG2NC15000A, WDG2NC20000A, WDG2NC10000S, WDG2NC10000S, WDG2NC20000S, 100% Compatible Part #: DA-36G12 AC, DA-36J12 AC, DA-42J12 AC, DA-48M12 AC, S040EM1200300, WD Part#: WDPS033RNN, WDPS039RNN. ***COME WITH MICROFIBER ADAPTER POUCH!! "STONE POWER EXCLUSIVE"***