What is the power that can be delivered when using usb 3.0 port?

USB 3.0 ports can deliver up to 4.5 watts (5 volts at 900 milliamps) of power. This is an increase from USB 2.0, which provides up to 2.5 watts. Additionally, USB 3.0 supports the possibility of higher power delivery when using specific extensions or configurations, such as USB Power Delivery (USB PD).