UCEC USB 2.0 Adapter - A-Male To Micro-Male - Black (2 Pack) Color: Black. USB Male To Micro USB Adapter Adapter converts USB Male A port to Micro USB Male B port. Fully support High Speed USB 2.0 specification. Instant charging, no cords to mess up. Small and portable, easy to carry Directly Work with Power bank, computer etc. Streamline cable management, save a lot of cable space.