Specification * Power: 12V 2A * Overload Protection with High Quality Wires * Overheating Protection with Smart Chip * Anti-Interference Feature with Better Isolation Materials * High Quality, Extra Long 6.6FT/2m AC/DC Cord1.Compatible with: This Product Has Been Tested and Validated to Ensure It Will Work with External Hard DrivesSeagate P/N 9SF2A4-500, Seagate SRD0SD0 SRD00F2 ST3200823A-RK, Seagate WA-18G12U, Seagate Blackarmor Ws 110 Backup Plus Mac FreeAgent GoFlex Desk STAC1000103, Backup Plus Stca1000100 Stca2000100 Stca3000101 Stca4000100, Mac Freeagent Goflex Home Stam1000100 Stam3000100 Wa-18q12fu Ads-18e-12n 1dxap2-500 1dz9n4-500 Backup Plus Stca1000100 Stca2000100 Stca3000101 Stca4000100; Backup Plus for Mac Stcb2000100 Stcb2000900 Stcb3000100; Expansion Stbv1000100 Stbv2000100; Freeagent Goflex Home Stam1000100 Stam2000100; 9nk2al-510 9nk2ae-500 Free Agent Pushbutton 9nk2ag-500 7636490013904 Expansion 500gb; Freeagent 500gbex Dockstar Pro Theater Xtreme; P/N 9SF2A4-500; P/N KSAS0241200150HU WA-24E12 WA24E12 DA-24B12 AC ADS-24P-12-2 1224G ADS-24S-12 1224G 1224GPCU WA-24C12U S018BU1200150 Seagate Central: STCG2000100, STCG3000100, STCG4000100, Backup Plus 2TB 3TB 4TB 5TB 6TB 8TB: STDT2000100, STDT3000100, STDT4000100, STDT5000100, STDT6000100, STDT8000100, STDU3000101, STDU4000100, Expansion 2TB 4TB 5TB: STBV4000100, STEB2000100, STEB3000100, STEB4000100, STEB5000100, ST30000CB, ST30000U2, ST302504FDA1E1-RK, ST303204FDA1E1, ST303204FDC1E1-RK2.Package Includes: 1 × 24W 12V 2A Power Adapter with 6.6FT 5.5*2.5mm Cable 3 × AC/DC Plug Convert Adapter, Dimen of 2.5mm/3.5mm/4.0mm.3.Guarantee: Up to 1 Year Warranty Period.