KSZ8864RMNUB is a 4-port Ethernet switch IC from Microchip Technology Inc. It is designed for high-performance embedded applications and is suitable for use in industrial and commercial systems. The KSZ8864RMNUB supports 10/100 Mbps Ethernet operation and provides a range of features including Auto-MDIX, Quality of Service (QoS), and store and forward switching. It also has integrated LED drivers and support for energy-efficient Ethernet (EEE) compliance. The-40°C to +85°C temperature range and RoHS-compliant 48-pin QFN or TQFP package makes it an ideal choice for use in a wide range of network applications.