Assertion: keyboard | /r/HasAspect | the option
Facets:
Source sentences:
text: While most MIDI keyboards produced in the 2010s are bus-powered, meaning their electrical power is supplied through the same USB connection that transfers MIDI data to the computer, some keyboards have the option of, or even require, using external power to operate.
text: Most keyboards have the option to pop off the keys in order to give them a good deep cleaning.