Replace your lost or failed power adapter this 5v power supply can provide a power source for any electronic device that has a c type barrel and requires 5volts and up to 4 amps of power the adapter is a perfect replacement for the lost or damaged power adapter youve used to power your existing electronics when downtime isnt an option keeping spare power adapters on hand ensures that you wont be left waiting for a replacement to arrive or have to replace your devices just for the sa