The ULi PCI to AGP Controller is a driver for a specific chipset found in some older motherboards. ULi, which stands for United Microelectronics Corporation, was a Taiwanese company that designed chipsets and other components for PCs. The PCI to AGP Controller is typically part of the ULi M1695 chipset (or similar ULi chipsets) that allowed communication between the PCI bus (Peripheral Component Interconnect) and the AGP bus (Accelerated Graphics Port), primarily for handling graphics cards.