In Linux, is there a way to find out which PCI card is plugged into

PCI-e slots are used for graphic cards , network cards, audio cards, etc If you don't need it, ignore the slot Depending on

Ensure Proper Installation: Verify that the graphics processing unit is securely fastened to the casing and fitted into the PCIe slot Use

which slot does washing powder go in If everything isn't equal, than a triple-slot card could actually put less stress on the slot than a double slot card; a triple slot cooler

which caliper is used to measure the width of the slot Ensure Proper Installation: Verify that the graphics processing unit is securely fastened to the casing and fitted into the PCIe slot Use