The Realtek PCIe GbE Family Controller is a LAN hardware on the motherboard that controls the network function, and the controller chipset connects the computer’s PCI Express (PCIe) bus to GbE (Giga Band Ethernet). It is responsible for managing the wired network connection on a device, handling network-related tasks such as sending and receiving data packets, managing network settings, and ensuring a stable connection. The Realtek PCIe GbE Family Controller driver is the driver for the LAN hardware adapter. It is recommended to keep the driver updated to avoid connectivity issues. The driver can be updated automatically using driver updating tools like Advanced Driver Updater or manually through the Device Manager. The Realtek PCIe GbE Family Controller is available in three variants based on its supported speed: 2.5G Gigabit Ethernet, 10/100/1000M Gigabit Ethernet, and 10/100M device.