Amazon.com: ASUS Prime Z690M-PLUS D4 Intel Z690 LGA 1700 mATX Motherboard PCIe 5.0, three M.2 slots, 10+1 DrMOS, DDR4, Intel 1 Gb LAN, HDMI, USB 3.2 Gen 2x2 Type-C, Front USB 3.2
Amazon.com: SHANGZHAOYUAN B250 BTC-12P Mining Motherboard (Intel 6th/7th Gen) LGA 1151 Motherboard with 12 PCIe Slots, VGA+DVI, MSATA, 2*DDR4, USB 3.0 for Miner (BTC/ETH/ZEC/ETC) : Electronics
Asus has a motherboard that supports up to 19 GPUs | PC Gamer