GEP New 12V AC Adapter/Powe Supply For Western Digital External Hard Drive My Book World Edition II (blue rings): WD20000D033, WD15000D033, WD10000D033, WDG2NC10000N, WDG2NC15000N, WDG2NC20000N, WDG2NC20000, WDG2NC15000, WDG2NC10000. Input: 110-240V 50/60Hz Auto-Detect International Output: DC12V (36W~50W) Connector: Barrel Industrial standard circuit; Quality New Electronic Components; Over Voltage Protection; Over Current Protection; Short Circuit Protection Item Includes: 1 AC Adapter and 1 Power Cord Fireproofing Material Cover; Dimensions: 117mm X 50mm X 30mm. Color: Black; LED Light Charging Indication.