Considering the fact that Bitcoing mining has become quite popular and in certain cases quite profitable, ASRock has decided to launch two new motherboards based on Intel's H81 and H61 Express chipsets that are aimed to be exclusively used as Bitcoin mining systems, the H81 Pro BTC and the H61 Pro BTC.
Catering to both 4th generation Intel Core CPUs with Intel H81 Express chipset with socket 1150 as well as the older 2nd and 3rd generation Intel Core CPUs with Intel H61 Express chipset with socket LGA 1155, both motherboards feature a total of six PCI-Express slots, including single PCI-Express 3.0 x16 as well as five PCI-Express 2.0 x1 slot, which allow users to install up to six graphics cards. It also comes with two additional 4-pin Molex power connector that should provide enough additional power to GPUs.
Other than the fact that they support up to six graphics cards, these two new motherboards are pretty much standard H81 and H61-based motherboards so all expected features are definitely there. You can check both of the new Bitcoin mining motherboards via link below.
Source:
ASRock.com.