A Which motherboards support the PCIe 4.0 expansion card slots? Posted on June 8, 2020 Current motherboards that support PCIe 4.0 include the AMD X570 chipset when paired with select 3rd Gen Ryzen CPUs and AMD TRX40 chipset motherboards. You can see a list of PCIe 4.0 compatible boards here. [LINK TO NEWEGG] Did you find this FAQ helpful? 1 0 Share facebook twitter Back to Top