ESI M4U eX [USB 3.0 MIDI interface] 8 ports IN/OUT dual use

M4U eX is a compact USB 3.0 MIDI interface with 8 MIDI ports that can be used for IN/OUT (automatically recognized). When connected to a computer, it can also function as a standalone MIDI thru box or MIDI merge box. It also has a 3-port USB 3.0 hub, allowing you to connect USB dongles, USB MIDI keyboards, and expansion M4U eX (M8U eX). This is a very convenient MIDI interface that can be used in both private studios and large-scale systems. USB bus powered