CASIO CTK-710 ELECTRONIC KEYBOARD USB 100 Rhythms 242 Tones 50 Song Piano Bank | eBay
Amazon.com: Inovat Replacement 10FT USB A Male to B Male Cable Cord Data Transfer Host Cable Cord for Casio CTK-2400 CTK-4400 CTK-6200 61-Key Keyboard : Electronics
Professional 61-key Keyboard Connectors USB 2.0 Cable Silver-plated Fit for Casio CTK-2400 CTK-4400 CTK-6200 61-key Keyboard - AliExpress