Auxiliary power when the USB port is not enough
Bus power is usually sufficient, but a distant device with higher consumption can become unstable. In that case the included power cable goes into a phone charger with a USB-A output of at least 5 V / 1 A. With auxiliary power even a 2.5″ external drive works without its own power supply. Two LEDs show power and USB connection, and no drivers are needed: Axagon lists Windows XP to 11, Windows Server, Mac OS X 10.x and Linux (kernel 2.6.x and later).