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