https://www.techradar.com/news/you-can-plug-20-graphics-cards-into-asus-new-monster-mining-motherboard

Asus has revealed a new motherboard specifically designed for cryptocurrency miners who need lots of GPU power, with the mobo being capable of supporting no less than 20 graphics cards.

The H370 Mining Master motherboard (with an LGA 1151 CPU socket) follows up on the previous B250 Mining Expert board, and makes a number of refinements aside from the sheer amount of graphics cards you can plug into the thing (although admittedly, it’s only one more card than its predecessor, as the B250 supported 19 GPUs).