Note: Win95/98/98SE are now relatively old operating systems, and drivers are no longer optimized for those operating systems. Many users of VIA chipsets who run Win95/98/98SE report that using an older version, such as VIA 4in1 version 4.35, they experience a more responsive system.

The 4-in-1 drivers are a collection of periodically updated drivers that provide enhanced VIA chipset support under Microsoft Windows. All VIA chipset users should install the 4-in-1 drivers to improve performance, fix issues, and minimize any incompatibilities.