The SiS 530 is an integrated graphics chipset from Silicon Integrated Systems (SiS), which was used in various motherboards and systems in the late 1990s and early 2000s. It provides graphics capabilities, including 2D and 3D acceleration for a variety of operating systems, including Windows.

The SiS 530 Windows driver refers to the software that allows your operating system (like Windows XP, 2000, or older versions) to properly communicate with the SiS 530 graphics chipset, enabling features such as video output, display resolution settings, and hardware acceleration.