PCI\VEN_14E4&DEV_166B

NetXtreme BCM5780S Gigabit Ethernet driver

PCI\VEN_14E4&DEV_166B is the Broadcom Inc. and subsidiaries NetXtreme BCM5780S Gigabit Ethernet, an Ethernet device. Without it the wired port shows as an Ethernet Controller under Other devices and the cable does nothing. Get it from Windows Update or your PC maker first; the chip maker's own package is on support.microsoft.com.

Download from support.microsoft.com Full guide: Find the right Ethernet driver

Device details

Hardware ID	`PCI\VEN_14E4&DEV_166B`
Device name	NetXtreme BCM5780S Gigabit Ethernet
Maker	Broadcom Inc. and subsidiaries (PCI vendor ID 14E4)
Device type	Ethernet
Driver guide	Find the right Ethernet driver

How to install the driver for NetXtreme BCM5780S Gigabit Ethernet

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_14E4&DEV_166B.
Try Windows Update. Settings, Windows Update, Advanced options, Optional updates. Network drivers may appear here once another connection works, such as Wi-Fi or a phone hotspot.
Check your PC maker. Enter your model or serial number on its support site and look under Networking or LAN.
Use the chip maker's package. Update drivers through Device Manager in Windows (Microsoft) on support.microsoft.com. Our find the right ethernet driver guide explains which package fits.
Restart and check. Plug in the cable and check that Windows shows a wired connection.

Other Broadcom ethernet IDs

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