Roland UM-ONE mk2 USB connection MIDI interface Compatible with Windows and Mac OS X. Used once and stored in a dark place. It is working properly. - Brand: Roland - Model name: UM-ONE mk2 - Connection terminals: USB, MIDI IN, MIDI OUT - Supported OS: Windows, Mac OS X - Cable length: Approx. 1.5m The UM-ONE mk2 is a USB MIDI interface with an integrated cable that allows for simple connection between a computer and MIDI devices. You can connect MIDI keyboards and digital pianos without USB terminals, MIDI sound sources, etc. to your computer. The UM-ONE mk2 also supports connection with iPad (※1) in addition to Windows/Mac. It is also useful for collaboration with iPad applications compatible with MIDI devices. • A 1-in/1-out USB MIDI interface with an integrated cable. Equipped with an LED indicator that allows you to check the transmission and reception status of MIDI signals. • Compatible with 3 platforms: Windows/Mac/iPad (※1). • Supports USB bus power, making it useful in mobile environments. ※1: An Apple Camera Connection Kit is required separately. Furthermore, the UM-ONE mk2 is equipped with LED indicators so you can visually confirm the transmission and reception of MIDI signals, allowing for quick troubleshooting during problems.