Can I plug my Audio Interface into an outlet?

Can I plug my Audio Interface into an outlet?

Added (1). I have a focusrite Scarlet 2i2 that I basically want to use as a DI box. Microphone in and quarter inch out. When I plug it into my computer, I can use the Direct Monitor switch and hear the mic without opening a DAW program like Logic. Is it safe to plug the USB plug into an outlet via an iPhone USB wall outlet instead of plugging it into the computer? I don't want to fry anything by giving the 2i2 too much power.

I doubt that it would work. While the interface might not need a DAW program, it does need the computer to control the sound card functions. The USB is a two-way serial data interface, and the card probably needs data from the computer in addition to 5 volts operating power.