As always, these drivers can be used on any VIA chipset based
running any Microsoft Windows 32 bit operating system, but they
recommended especially for systems running WinME, Win2K and WinXP
using KT4## series, P4X4## series and newer, for example:
K7 chipsets: KT400, KT400A, KT600, KT880, KM400, KN400
K8 chipsets: K8T800, K8T800Pro, K8M800, K8T890, K8T890Pro
P4 chipsets: P4X400, P4X400A, PT800, PT880, PM800, PM880, PT894
Other drivers are recommended for older operating systems and chipsets.
The changes to this driver, compared with the VIA Hyperion 4in1 v4.53
4in1 v4.55 driver will not update the AGP driver if the system is
WinXP SP2, in line with Microsoft's recommendations concerning
drivers. The IDE Miniport driver is updated to v3.24 under Windows NT4.0
The VIA Machine INF driver(commonly called the ID file) is updated
2.30, which adds support for the upcoming PT894 and P4M800 chipsets
the VT8251 South Bridge.
Download VIA 4in1 v4.55 here.