ICP-4040 is an innovative PCI-bus Lite-managed Redundant Ring Ethernet switches with 4x10/100TX ports. It immediately upgrades current IPC/embedded system to redundant Ethernet network. With completely support of Ethernet Redundancy protocol, O-Ring (recovery time < 10ms over 250 units of connection) and RSTP/STP (IEEE 802.1w/D) can protect your mission-critical applications from network interruptions or temporary malfunctions with its fast recovery technology.