When Device Manager shows an Unknown device and Windows cannot name it, the Hardware ID still identifies the hardware. It is the safest way to find the right driver without trusting a driver-pack website.
Windows matches each device to a driver package using identifiers that the hardware reports. These Hardware IDs are what Device Manager shows under Details, and they stay meaningful even when Windows has no name for the device.
Right-click Start and open Device Manager. Right-click the device (often under Other devices, as Unknown device, PCI Device or Network Controller), choose Properties, open the Details tab and pick Hardware Ids in the Property list.
The first line is the most specific one. Copy it - for example PCI\VEN_8086&DEV_15F3.
For PCI and PCIe devices, VEN is the vendor (maker) and DEV the device. Examples of vendor codes: 8086 Intel, 10DE NVIDIA, 1002 AMD, 10EC Realtek, 14E4 Broadcom; look others up in a trusted PCI ID database.
For USB devices, VID is the vendor and PID the product. SUBSYS identifies the PCI subsystem and subsystem vendor, which can help tell OEM-specific variants of the same device apart. REV is the hardware revision.
You can also list identifiers from a command prompt. On current Windows builds, run this in a Command Prompt:
pnputil /enum-devices /bus PCI /deviceids
This lists PCI devices with their Hardware IDs, which is handy when you want to copy several at once or Device Manager is hard to read.
For a laptop or branded PC, open the support page for your exact model and look in the Network, Chipset, Storage or Audio sections. For a self-built PC, use the motherboard maker's page. For a graphics card, use the card maker's or chip maker's page.
Searching the vendor and device code together with the maker's name often narrows it down quickly. Check Windows Update, including Optional updates, before searching elsewhere.
Sites that offer drivers for any ID are a common source of unwanted software and mismatched packages. Use the PC maker, the motherboard maker or the chip maker, and match the driver to your Windows version and to 32-bit or 64-bit.
Rain Driver reads the same device information locally, lists every device with a plain-language explanation, and points to the official sources instead of third-party packs. Driver Passport records hardware IDs and versions with a SHA-256 checksum for each file. It never installs a driver without your confirmation.
Rain Driver does the export, checksum and restore steps for you — but every step above works without it.
Last updated: 2026-10-01
Yes, it is the most specific. The following lines are less specific fallbacks that Windows also matches against.
Often, yes, but the SUBSYS value can tell you the PC maker's variant, which affects which driver is right.
We recommend against it. Use the PC, motherboard or chip maker's official page and Windows Update instead.
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