List of Motherboards with 2 PCI-Express x1 Slots

you will need at least a pcie x16 or pcie x8 to prevent bottlenecks a pcie x1 slot will most definitely reduce PPD from the card on it

A 1x slot can only output 10W of combined power from and 5V combined PCI-E 1x at is still not fast enough for any type of gaming, and

pcle x1 slot PCIe slot but no USB ports so it can connect to external storage devices x1 or wider expansion slot Step 3 Remove the slot cover and insert

pcle x16 slot I explain in this video what devices PCIe x1 slots are used for on a motherboard I also attempt