Supermicro C9Z490-PGW Conclusion More widely known for its server-grade models, Supermicro always launches a small number of consumer motherboards, sometimes with some extra flair and hardware we don't see from the regular vendors. This time around, Supermicro's top-tier C9Z490-PGW uses a PLX chip which enables the board to operate with dual PCIe 3.0 x16 or quadruple PCIe 3.0 x8 slots. This is combined with dual PCIe 3.0 x4 M.2 slots from the chipset, a 10 gigabit Ethernet controller, and a Wi-Fi 6 interface which makes the C9Z490-PGW versatile for a wide array of users. Supermicro C9Z490-PGW Overview