Realtek Rtl8139 Driver 810x Family Pci-e Gigabit Windows 10 May 2026

The Realtek RTL8139 is a popular Ethernet controller chip used in many network interface cards (NICs). If you're using a device with this chip, you'll need to install the correct driver to ensure proper functionality. Here's a step-by-step guide to help you install and troubleshoot the Realtek RTL8139 driver on Windows 10 for the 810x family PCI-E Gigabit Ethernet adapter.