AC switching power adapter for WD, Seagate, and other electronic devices. 100-240V ~ 50/60Hz AC input, 12V 3.0A DC output, center positive STGG8000400,STKW8000400, STKK8000400,STKK16000400, STLC4000400,STLC6000400,STLC8000400,STLC10000400,STLC12000400,STLC14000400,STLC16000400 STLC18000400 STLC20000400