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Amazon.com: PK Power 12V AC/DC Adapter for Yamaha PIAGGERO NP31 NP11 NP30 NP 31 NP 11 NP 30 Portable Grand Digital Piano Keyboard 12VDC Power Supply Cord Cable PS Wall Home Charger :
Omilik AC Adapter compatible with YAMAHA PIAGGERO NP31 NP11 NP30 NP 31 NP 11 NP 30 Power Supply PSU - Walmart.com
Omilik AC Adapter compatible with YAMAHA PIAGGERO NP31 NP11 NP30 NP 31 NP 11 NP 30 Power Supply PSU - Walmart.com