The ATI Rage LT Pro PCI is a graphics card (GPU) released by ATI Technologies, part of the Rage series. It was designed for desktop computers and used the PCI (Peripheral Component Interconnect) bus interface for communication with the motherboard. The "LT Pro" version is a lower-end variant, typically featuring integrated graphics or lower performance compared to other models in the Rage series.

To use the ATI Rage LT Pro PCI with a Windows system, you'll need the proper device driver. A driver allows the operating system to recognize and communicate with the hardware so that it functions correctly.