What is the Intel(R) Serial IO SPI Host Controller - 51AB Windows Driver?

The Intel(R) Serial IO SPI Host Controller - 51AB is a device driver used to manage the communication between your system's CPU and external devices through the Serial Peripheral Interface (SPI). SPI is a synchronous serial communication protocol commonly used to connect low-speed devices like sensors, memory chips, and peripheral devices to the main system.

The Intel Serial IO (Input/Output) SPI Host Controller is part of Intel's Serial IO Technology, which allows the CPU to interact with external devices that support the SPI protocol. This controller is commonly found in newer Intel chipsets, particularly in laptops and embedded systems.

• SPI: This protocol allows the CPU to exchange data with external devices in a very efficient and fast manner.
• The 51AB is the specific ID for this version of the host controller.