Manufacturer: Allen-Bradley / Rockwell AutomationAllen-Bradley 1783-RMS06T Stratix 8300 Managed EtherNet Switch, Layer 3, Modular, 4 x 10/100 Mbps Copper Ports and 2 x 10/100/1000 Mbps Dual-purpose Ports (Copper Ports with SFP Slots), 2 x Power Source Connectors with Relay, 24/48V DC Power (18-60VDC Range)