The USB bridge A by Tubbutec is a convenient link between USB keyboard controllers and Eurorack modules and synthesizers with MIDI TRS connectors. The module is able to merge MIDI data and output it via the TRS connectors. No matter if notes, controller data, clock and sync messages and even SysEx data, versatile applications are possible with this module. It is also possible to connect e.g. a groovebox with TRS connectors to a Eurorack sampler which also has such connectors. Via a rear jumper the module can provide the additional power supply via the 5V rail and is able to charge two smartphones at the same time, depending on the power supply used.