This DC switching power supply is perfect for driving up to 20 ShiftBrite
modules. It delivers 5.5 volts at up to 2 amps from US-style 120VAC power
outlets. The ~70" cable is tipped with a 4mm OD x 1.5mm ID center-positive
barrel plug. This can be cut off to enable direct wiring; the cable consists of
a braided negative shield surrounding an insulated stranded positive wire. A
green power LED indicates normal operation.