smallest pc with pcie slot: MiniPC with PCI-E Slot?. Smallest Intel/Win10 PC with PCIe Slot?. What are Small PCIe x1 Slots Used For? - CGDirector.
China Manufacture Qiyang Industrial Mini Pc Computer With PCIE/
PCI Slot Core I3 I5 I7 Linux Mini Pc 4*Lan/8*RS232/Rs485COM/8*USB.
In fact, the smallest SFF PC with support for PCIe video cards that we happen to be aware of is the ZOTAC ZBOX MAGNUS series, with a 5.8L chassis.