USB-MIDI Interface Cable: Enables data exchange from USB to MIDI. Compatible with PC and Mac. Extremely compact and easy to use. Data flow indicators for MIDI IN and MIDI OUT. Powered via USB connector: USB to 2x MIDI. The Roland UM-ONE mk2 is a compact, practical, and fast USB-MIDI interface cable with very low latency for precise timing. The interface cable is powered through the USB port and is compatible with PCs, Macs, and even iPads (requires optional Apple Camera Connection Kit). Package includes: Roland UM-ONE mkII interface cable.