myVolts Ripcord 5V DC, Voltage converter and adapter cable, Powers synthesizers, effect devices, MIDI equipment and numerous other devices with power via USB port, power bank or USB power supply, 5 V DC, 1.8A (1800mA), Polarity: centre postive, Output: 5.5 mm barrel connector, 2.1 - 2.5 mm inside, Input: USB-A, Cable length: 145 cm