X2 Titanium 550W X-Connect Power Supply Unit PSU SLI Compatable 20/24 Pin, Sata, PCIE, Modular cables ULT31851 AC Input Voltage - 115V/230V AC Input Frequency - 50-60Hz AC Input Currents - 8.5A (RMS) for 115VAC input, 5.5A (RMS) for 230VAC input Supports AMD and Intel Motherboards Low Acoustic Noise