Ripcord PLUS USB Battery and Phone Adapter Ripcord lets you power your music equipment from any USB port. Power effects pedals, MIDI keyboards, mini amps, recorders, and thousands more - all from a USB port! Works with any USB port - laptop, phone charger, desktop PC, or even a mobile USB battery! We can recommend Ripcord on any musical device if contacted first. CE-certified, RoHS certified, Energy Star level 5 approved - plus overvoltage, overcurrent and short circuit protection to protect your devices from damage.