The RTL8105E-VC-CG is a single-chip Fast Ethernet controller designed by Realtek. It is optimized for gigabit desktop and mobile motherboards, and supports 10/100/1000 Mb/s data rate, plug-and-play, Wake On LAN from power off state, and other features. It also includes proprietary power-saving technology that reduces energy consumption in low-linked and idle modes to help reduce overall power utilization. Additionally, it has support for various operating systems such as Windows 7/Vista/XP/×64/2000, Linux, and FreeBSD.