A PCI Express (PCIe) card is an expansion card that connects to a computer's motherboard to add functionality not already built into the system, such as a graphics card, sound card, or network adapter.
PCIe is a high-speed standard for connecting hardware components inside computers.
The box indicates compatibility with Windows XP, Windows Vista, Windows 7, and Windows 8.
The cards are used to enhance a computer's capabilities.
PCIe has replaced older expansion bus standards like PCI and AGP.