Best answer: Yes it will, but it may not efficiently charge your 15-inch MacBook Pro while you're using it. You'll have to close your MacBook or make sure it's off in order to get a full charge. The monitor will charge your 13-inch MacBook Pro without any issues.Amazon: LG 27UD88 monitor ($580)Amazon: LG UltraFine 5K ($1,490)Apple: MacBook Pro ($1,300 - $2,800)