ASUS B250 MINING EXPERT LGA1151 DDR4 HDMI B250 ATX Motherboard for Cryptocurrency Mining (BTC) with 19 PCIe Slots and USB 3.1 Gen1Built for superior cryptocurrency mining performance, the ASUS B250 MINING EXPERT features Triple-ATX12V Power Delivery and Mining Mode BIOS Optimization. PCIe Slot State Detection provides instant GPU feedback for 19 PCIe slots while 5X Protection III with Safe Slot Core protects your investment, delivering higher hash rates and better mining ROI.