BTC B250C Motherboards 12 gpu mining motherboard B250 12 USB for RTX 3070 | eBay
B75 btc mining motherboard 12 gpu usb + CPU | eBay
Amazon.com: TB360-BTC PRO 2.0 Core i7/i5/i3 (Intel 8th and 9th Gen) LGA1151 Intel B360 DDR4 12 GPU Mining Motherboard Upgraded Model : Electronics
Amazon.com: LGBOY 12 GPU Mining B250 Motherboard Support G3900 CPU LGA1151 DDR4 RAM Maximum 16GB Mainboard for 12 PCIE 1x 16x Graphics Card Support VGA DVI for Miner Dropship with SATA Cable+Switch :