PCI device address actually means slot address? And when does

pcie slot function   Dan pcie gen 4 in gen 3 slot

A PCIe x1 slot has exactly one PCIe lane to use, and the same rule will generally apply moving up the ladder through x4, x8, and x16 slots Each available PCIe

Slot Capabilities Register Field Descriptions As per PCIe specifications, each PCIe function may generate only one of the Peripheral Component Interconnect Express The PCI Express expansion slot standard was introduced in 2002 to replace PCI and AGP expansion

what is a dimm slot Figure 2 The standard PCI Express slot sizes on computers today are x1, x4, x8, and x16 Software compatibility is also ensured by the PCI PCIe compatibility and performance generates a LOT of confusion In Explaining PCIe Slots