pci or pcie slot
Inno3D Nvidia-Geforce GT 730 4GB DDR3 HDMI DVI VGA video-card ...
1Pcs Black PCIE PCI-E 16X 164 Pin DIP Slot Video Card Socket Connector Adapter.
Amazon.com: StarTech.com 4-Slot PCIe Expansion Chassis w/PCIe ...
PCI-Express will negotiate how many lanes will be used, and your card will work at its full speed, assuming the PCIe slot has the same or higher PCIe version.
pci express - What's the difference between PCI-e size and bandwidth ...
I want to use the 3rd CPU-bound PCI-e slot with the same ASRock NVMe-PCIe adapter as yours with two M.2 PCIe 4x flash drives (Samsung 970 pro).