Accelerated Graphics Port (AGP) is a type of expansion slot on a computer motherboard, originally developed by Intel, specifically designed for graphics cards. Located nearest to the processor, AGP slots provide a high-speed connection between the CPU and the graphics card, allowing for faster rendering of images, 3D graphics, and video content. AGP slots are uniquely keyed and positioned so that only compatible graphics cards can be installed, preventing other types of expansion cards from fitting. While largely replaced by PCI Express in modern systems, AGP played a critical role in the development of high-performance computer graphics and remains relevant for understanding legacy photography and imaging workstation setups.