Rosewill Unmanaged 10/100/1000Mbps Switch (RC-410LX) Auto-Negotiation between 10/100/1000Mbps to auto sense the link speed of each device to optimize the performance RC-410LX supports Green Ethernet to significantly save port usage power and cable length power Auto MDI / MDIX to eliminate the crossover cables. 9KB jumbo frame optimizes the large file transferring