Realtek RTL8139 Family PCI Fast Ethernet NIC #2 Driver

The Realtek RTL8139 Family PCI Fast Ethernet NIC #2 driver allows Windows to communicate with this PCI Ethernet adapter so your computer can connect to a wired network. It is useful when reinstalling Windows, troubleshooting an unrecognized network card, or restoring a missing Ethernet connection on an older desktop.

Key Features

• Enables wired networking through compatible RTL8139-family PCI Fast Ethernet hardware, with link speeds up to 100 Mbps depending on your network equipment.
• Provides the device support Windows needs to recognize and manage the Ethernet adapter.
• Supports network communication for everyday tasks such as browsing, transferring files, and accessing shared printers.
• Offers driver options for Windows 10, 8.1, 7, Vista, and XP; choose a package that explicitly matches your operating system and hardware.

How to Install Realtek RTL8139 Family PCI Fast Ethernet NIC #2 Driver

1. Identify your adapter and Windows edition. Open Device Manager and locate the adapter under Network adapters or Other devices. Check its hardware IDs under Properties > Details, and confirm whether Windows is 32-bit or 64-bit. The “#2” suffix usually identifies another device instance, not a separate chipset model.
2. Choose a compatible package. Before starting your Realtek RTL8139 Family PCI Fast Ethernet NIC #2 driver download for Windows, verify the package’s supported systems and matching hardware IDs. For Windows 10/11 searches, note that Windows 11 compatibility is not established by the supported OS list on this page.
3. Download and prepare the files. Select the latest version that explicitly supports your configuration, rather than simply the newest available package. Use a trusted free download source and extract the archive if necessary. If Ethernet is unavailable, download on another computer and transfer the files using a USB drive.
4. Install the driver. Run the supplied installer, or right-click the adapter in Device Manager, select Update driver, and choose Browse my computer for drivers. Point Windows to the extracted driver folder and follow the prompts.
5. Restart and test. Restart if prompted, connect an Ethernet cable, and check that Device Manager shows no warning icon. Test access to your router or an internet page.

Keep the driver updated when a compatible release addresses a problem you encounter. Before an update, save your working installer or create a restore point so you can recover if connectivity changes. A stable driver matched to your adapter and Windows version is more useful than an unsupported newer release.