The Intel i855 refers to the Intel 855 chipset series, which was popular in laptops and desktops around the early 2000s. It includes integrated graphics (Intel 855GM or Intel 855GME) and provides support for various system functions like USB, IDE, and PCI devices.
The Intel i855 Windows driver is a software package that allows Windows to communicate effectively with hardware components powered by the Intel 855 chipset. This could include: