USB Host Switching Cable - Mini Mechanical KVM : ID 4844 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: USB to Host Cable USB Cable Cord 10 Feet Compatible with Yamaha PSR-EW300,PSRE353,PSR-E363,PSR-EW410,PSR-E463,PSRE373,PSRE-343,PSRSX900,YPT260,YPT270,YPT360,P71,NP12,P45,P125 Portable Piano Keyboard : Musical Instruments
Amazon.com: HiLetgo 2.0 ADK Mini USB Host Shield SLR Development Tool Compatible SPI Interface For Arduino : Electronics
Yamaha UD-BT01 Wireless Bluetooth USB to Host MIDI Adapter | Sweetwater
5in Micro USB to USB OTG Host Adapter - USB Adapters (USB 2.0) | StarTech.com
Electronic Usb Midi Cable | Midi Cable Usb Drums | Midi Cable Usb Piano - Pc Hardware Cables & Adapters - Aliexpress
Amazon.com: StarTech.com 5in Micro USB to USB OTG Host Adapter - Micro USB Male to USB A Female On-The-GO Host Cable Adapter (UUSBOTG) : Electronics
Amazon.com: DSYJ DSYJ-D0000101 Micro USB Host OTG Cable with Micro USB Power for Nexus 4 Nexus 7 Galaxy S Iii & Galaxy Nexus 0.65ft 1Pcs Black : Cell Phones & Accessories
Amazon.com: MaxLLTo 15 Feet USB Cable Data Transfer Host Cable For Akai ProfessionalMPK88 MPK Mini LPK25 APC40 Akai Professional MIDI Keyboard midi Controller Keyboard PC Cord : Musical Instruments