So this is something special from ASRock, the company just revealed the H110 Pro BTC+ motherboard with a whopping 13 PCIe slots! One PCIe slot is x16 while the other slots use x1 but that shouldn't really be a problem for cryptocurrency mining jobs. Additionally, it also has a M.2 slot which could be converted to a 14th PCIe slot via a riser. But that's if you can get it all to work.
With the huge popularity of cryptocurrency mining (such as Bitcoin, Ethereum and Litecoin), ASRock is launching a new motherboard with an incredible 13 PCIe slots. During Computex, ASRock will demonstrate the soon-to-be-launched H110 Pro BTC+ motherboard that is dedicated to serve mining users and show how to mine cryptocurrencies and earn Bitcoin efficiently.
Pricing and availability is unknown, but it should be on the market soon.
A video on YouTube shows ASRock running the board with eight GPUs. More was reportedly not possible without Windows crashing, but a patch is expected in July.