Power surge at usb when connecting iPad Pro
When connecting my iPad Pro with update 16.1 to my laptop a warning comes up,”power surge” at the usb ports.Two of them.
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As described, your laptop may be unable to provide sufficient power to charge your iPad.
Most models of iPad require a USB power source rated at 12W (i.e., 2.4A @5V) or greater to reliably charge. 5W Power Adapters intended for older models of iPhone are inadequate to charge an iPad; if the iPad charges at all, charging will be very slow.
Be aware that many computer USB ports cannot source sufficient power to charge an iPad. Unless explicitly designed for charging connected devices, computer USB ports are typically limited to 0.5-1A @5V (i.e., 2.5-5.0W).