PCI\VEN_8086&DEV_51AB
Alder Lake SPI Controller driver
PCI\VEN_8086&DEV_51AB is the Intel Corporation Alder Lake SPI Controller, a Serial IO device. It connects the touchpad, sensors or buttons on many laptops. If it has no driver the touchpad or rotation sensor may not work. Get it from Windows Update or your PC maker first; the chip maker's own package is on intel.com.
Device details
| Hardware ID | PCI\VEN_8086&DEV_51AB |
|---|---|
| Device name | Alder Lake SPI Controller |
| Maker | Intel Corporation (PCI vendor ID 8086) |
| Device type | Serial IO |
| Driver guide | Get the Intel Serial IO driver |
How to install the driver for Alder Lake SPI Controller
- Confirm the ID. In Device Manager, right-click the device, open Properties, then Details, and pick Hardware Ids. The first line should start with
PCI\VEN_8086&DEV_51AB. - Try Windows Update. Settings, Windows Update, Advanced options, Optional updates. Serial IO drivers are rarely offered here, so the PC maker is the main source.
- Check your PC maker. Enter your model or serial number on its support site and look under Chipset.
- Use the chip maker's package. Intel Serial IO Driver for 11th Generation Intel NUC products (SetupSerialIO.exe) on intel.com. Our get the intel serial io driver guide explains which package fits.
- Restart and check. Test the touchpad and any sensors after the restart.
Other Intel serial io IDs
VEN_8086&DEV_51A4Alder Lake-P PCH SPI ControllerVEN_8086&DEV_51A8Alder Lake PCH UART #0VEN_8086&DEV_51A9Alder Lake PCH UART #1VEN_8086&DEV_51AAAlder Lake SPI ControllerVEN_8086&DEV_51C5Alder Lake-P Serial IO I2C Controller #0VEN_8086&DEV_51C6Alder Lake-P Serial IO I2C Controller #1VEN_8086&DEV_51D8Alder Lake-P Serial IO I2C Controller #2VEN_8086&DEV_51D9Alder Lake-P Serial IO I2C Controller #3
Device names: The PCI ID Repository, public data. We never host driver files: downloads come from the maker.