MIDI keyboards with USB to host port

USB to host (type B)

— a connector for connecting a keyboard to a USB port — usually a computer or laptop.

One of the functions of this connector, which is present in all models, is to work as a MIDI Out (see the relevant paragraph), that is, to transfer MIDI signals to a computer for processing and recording them. Actually, if you plan to connect the keyboard specifically to a computer, it is best to choose a model with a similar connection: USB inputs are available in almost any PC, while MIDI In can be found in far from any sound card. In addition, other functions can be implemented through this interface, for example, power supply and control of keyboard settings from a computer.