An engineer is configuring an office workspace that includes a variety of devices, including keyboards, mice, printers, and smartphones. The engineer is assessing the power distribution through the USB hub to ensure all devices function correctly without an external power source. What is the maximum power output per port that the engineer should expect from a USB 2.0 hub, assuming each port of the hub might be used to its fullest capacity?
500 mA
100 mA
900 mA
1 A