pciUtils

PciUtils is a standard collection of portable C libraries and programs for inspecting and configuring PCI devices. It is used for hardware debugging, driver verification, and system administration. Most Linux distributions and BSD systems include these utilities by default. The package primarily contains the following tools:

• lspci: Lists all PCI (Peripherial Component Interconnect) buses and devices attached to your motherboard (such as GPUs, audio cards, and network adapters) along with their detailed settings (e.g., vendor ID, driver in use, memory addresses).
• setpci: Queries and modifies the configuration registers of PCI devices directly.
• update-pciids: Downloads the latest central database of PCI device names and identifiers.
• pcilmr: A tool for performing PCI Link Margin Analysis.

Installation

The package is pre-installed on most Linux systems. If it is missing, you can easily install is using your system's package manager:

• Arch Linux: pacman -S pciutils
• Debian/Ubuntu: apt install pciutils
• Fedora/RHEL: dnf install pciutils

For more info, a little tldr;, visit our lspci Manpage. You can use lsusb to get similar information on USB devices.

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