AMD ACP (AMD Advanced Configuration and Power Interface) is a technology that allows the operating system to control power management features of the processor, chipset, and other system components.
PCI (Peripheral Component Interconnect) Bus is a type of computer bus used for attaching hardware devices in a computer. The PCI bus provides high-speed data transfer between the CPU and various peripherals such as sound cards, network adapters, and graphics cards.
In summary, AMD ACP can use the PCI bus to manage power consumption in connected devices.