Nicer-S products are CE / FCC / RoHS certified, tested by the manufacturer to match and / or exceed the OEM specifications. Compatible with Seagate FreeAgent External Hard Drive, Seagate Central/ Seagate Backup Plus/ Seagate Expansion/ Seagate FreeAgent GoFlex Desk P/N/ WD Western Digital/ WD My Book and others. Compatible with: Seagate Central: 2TB(STCG2000100)/ 3TB(STCG3000100)/ 4TB(STCG4000100)/ FreeAgent GoFlex Desk P/N: KSAS0241200150HU/ WA-24E12/ DA-24B12/ AC ADS-24P-12-2 1224G/ ADS-24S-12/ 1224GPCU/ WA-24C12U and More. Input:100-240V 50/60HZ ; Output: 12V 2A . 12V AC Power Adapter fits for Seagate Backup Plus SRD0SD0, Expansion SRD00F2, Central, FreeAgent GoFlex, SimpleTech External Hard Drive Power Supply Cord