Smaller, lighter and more energy efficient. Our GXF-10 power supply, a replacement for our WXF and WXF-10 transformer, has a four-foot cable terminating in a 5.5 x 2.1 mm coaxial connector. This 12-volt, 1 Amp power supply will power up to two High-Intensity goosenecks (use our WYE cord) or up to four Low Intensity or LED goosenecks (use the PYE cord).