The Realtek Ethernet All-In-One Controller Driver is the software driver for the Realtek Ethernet cards. It is a program used to communicate from the Windows PC OS to the device. This software is required in most cases for the hardware device to function properly. In most cases, drivers come with Windows or can be found by going to Windows Update in Control Panel and checking for updates as well as downloaded from the Realtek support website.
Network Interface Controllers > 2.5G Gigabit Ethernet > PCI Express
RTL8125 / RTL8125B(S)
Network Interface Controllers > 10/100/1000M Gigabit Ethernet > PCI Express
RTL8111B/RTL8111C/RTL8111D/RTL8111E/RTL8111F/RTL8111G(S)/RTL8111H(S)//RTL8118(A)(S)/RTL8119i/RTL8111L/RTL8111K
RTL8168B/RTL8168E/RTL8168H
RTL8111DP/RTL8111EP/RTL8111FP
RTL8411/RTL8411B
Network Interface Controllers > 10/100M Fast Ethernet > PCI Express
RTL8101E/RTL8102E/RTL8103E/RTL8105E/RTL8106E/RTL8107E
RTL8401/RTL8402