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?
According to USB 2.0 specifications, each port can deliver up to 500 mA of current. Neither 900 mA nor 1 A is a correct value for USB 2.0, as these values are associated with later USB specifications such as USB 3.0 and above, which have a greater power output capacity. A value of 100 mA is a minimum power output that can be expected for operations but does not represent the maximum power output capability for a single port, as devices operating on USB 2.0 might demand more power. Hence, the maximum expected power output is indeed 500 mA per port for USB 2.0.
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What are the differences between USB 2.0 and USB 3.0 in terms of power delivery?
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