Newegg offers the MSI Z170A Pro LGA 1151 Intel Z170 Serial ATA 3 ATX Motherboard for $79.99 plus $2.99 for shipping. That's the lowest total price we could find by $21. It supports sixth-generation Intel Core i3/i5/i7 and Intel Pentium and Celeron processors and features two PCI-Express 3.0 x16 slots, four PCI Express 3.0 x1 slots, two USB ports, four USB 3.1 ports, two USB 2.0 ports, an M.2 port, and six serial ATA 6Gb/s ports.