PCI\VEN_8086&DEV_51C8

Audio driver

PCI\VEN_8086&DEV_51C8 is the Intel Corporation Alder Lake PCH-P High Definition Audio Controller, an audio device. Without it you may get no sound, a missing speaker icon or a device marked as unknown. Get it from Windows Update or your PC maker first; the chip maker's own package is on realtek.com.

Download from realtek.comFull guide: Fix Multimedia Audio Controller

Device details

Hardware IDPCI\VEN_8086&DEV_51C8
Device nameAlder Lake PCH-P High Definition Audio Controller
MakerIntel Corporation (PCI vendor ID 8086)
Device typeAudio
Driver guideFix Multimedia Audio Controller
Known OEM variants1

PCs and boards that use this chip

Each line is a subsystem ID: the full hardware ID ends in SUBSYS_ plus these eight characters when the Alder Lake PCH-P High Definition Audio Controller is built into that maker's product.

Full hardware ID endingMakerProduct
SUBSYS_0B101028DellPrecision 3571

If your SUBSYS matches a laptop or board maker in this list, that maker's support page has the version tested for your model.

How to install the driver for Alder Lake PCH-P High Definition Audio Controller

  1. 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_51C8.
  2. Try Windows Update. Settings, Windows Update, Advanced options, Optional updates. Audio drivers often appear here.
  3. Check your PC maker. Enter your model or serial number on its support site and look under Audio or Sound.
  4. Use the chip maker's package. Realtek downloads on realtek.com. Our fix multimedia audio controller guide explains which package fits.
  5. Restart and check. Play a sound and check the output device in Settings, System, Sound.

Other Intel audio IDs

Device names: The PCI ID Repository, public data. We never host driver files: downloads come from the maker.