Tom's Hardware Guide published a review on ASRock H170M Pro4S And H170M-ITX/ac Motherboards
A quote from the article:
Today, we're looking at two more H170-chipset motherboard samples, both from ASRock. Are they worthy of consideration, particularly in comparison to the H170 boards previously reviewed?ASRock H170M Pro4S And H170M-ITX/ac Motherboard Reviews @ Toms Hardware