Ipad Pro Not Charging When Plugged Into Computer. However it will trickle charge when plugged into the computer. Try a USB self-powered hub or docking station.

Learn more about Apple USB power adapters. Not charging when plugged into wall but charges from computer. Try a Different Source of Electrical Power.
The USB ports on computers or laptops for both PCs and Macs put out 5 volts at 05 amps.
Inspect the lightning port for signs of dust or debris. Ive tested the iPad with 2 apple cords and 2 computers with the same results. Inspect the lightning port for signs of dust or debris. When attached to a computer via a standard USB port most PCs or older Mac computers iPad will charge very slowly but iPad indicates not charging.
