Drivers are software programs that enable the operating system to communicate with hardware components, such as motherboards, graphics cards, and sound cards. Without drivers, the operating system would not be able to recognize the hardware components, and they would not function properly. In the case of the Pegatron B85M2, drivers are essential to enable the motherboard's features, such as USB ports, SATA ports, and audio outputs. The drivers also ensure that the motherboard's components, such as the chipset and graphics card, function at optimal levels.