Features:8 tips to ensure compatibility with more notebooksHigh power densityComplies with Energy Star-V standardsMultiple protections: OPP, OVP, OCP, OTP and SCPSpecifications:Input voltage: 100 - 240VACInput Frequency: 50 / 60HzOutput Wattage: 90WOutput Wattage: 19 VDC (5%)Output current: 0 - 4.74AEfficiency: 87%Ripple/ Noise: 250mV