Used Keith McMillen Midi Expander MIDI Utility

Used Keith McMillen MIDI Expander in Good condition, perfect for connecting KMI controllers like the QuNexus or 12 Step to standard MIDI hardware. It features MIDI In and Out ports and a USB-B connection for simple plug-and-play operation. Requires external 5V power via included power supply. Compact and reliable, it’s ideal for stage or studio setups needing traditional MIDI compatibility with class-compliant USB controllers. Fully tested and ready to integrate into your workflow.