Most likely it has lower power requirements than the Pi. Your PCs USB ports cut off any load that draws more than 500 (USB 2) or 900 mA (USB 3). The Pi Zero whi

Most likely it has lower power requirements than the Pi. Your PCs USB ports cut off any load that draws more than 500 (USB 2) or 900 mA (USB 3). The Pi Zero which has the lowest power requirements, requires 1.5 A, although I think I have gotten away with 1 amp wall chargers in the past.