The Realtek RTL8211DG-VB-GR is an Ethernet transceiver used to connect devices such as computers, modems, and routers to Ethernet networks. It supports a wide range of Ethernet protocols with speeds of up to 1 Gigabit per second. This chip supports a variety of data frame sizes and offers features such as built-in autonegotiation and adaptive power-saving technologies. It also has a low-power shutdown mode, which helps conserve energy while the device is in standby mode. This transceiver is RoHS compliant and is packaged in a 256-pin quad flat package (QFP).