Gigabyte Releases B250 FinTech Motherboard with a native 12 PCIe slot configuration
Mining Motherboard 16GB DDR4 12 x PCIe Slots 12USB to PCI-E Motherboard ETH Multi-graphics Supports 2133/2400MHz Memory - Walmart.com
B250 Mining Motherboard Lga1151 Kit With G4400 Cpu Set 12*pcie X16 Sata3.0 For Miner Support Vga Hdmi Ddr4 Dimm Ram Eth Miner - Motherboards - AliExpress
B250C Motherboard 12 PCIE To USB 3.0 Graphics Card Slot LGA1151 Supports DDR4 DIMM RAM - Buy B250C Motherboard 12 PCIE To USB 3.0 Graphics Card Slot LGA1151 Supports DDR4 DIMM RAM Product on Alibaba.com
PCE-5B12D-04A1E-12-slot Dual Segment PICMG 1.3 Backplane; One CPU Card, One PCIe x16, 4PCI per Segment, RoHS