•Each port supports both 10/100 Mbps speed auto negotiation 
•Full duplex IEEE 802.3x and half duplex backpressure flow control 
•Auto-detection of PD (powered devices) and automatic power management 
•Over-temperature, over-current and over/under-voltage detection 
•Supports operating temperatures from -40 °C ~ +75 °C 
•Automatic MDI/MDI-X crossover for plug-and-play 
•Store-and-forward architecture 
•8 PoE ports for NS-208PSE/NSM-208PSE;
 4 PoE ports for NS-208PSE-4/NSM-208PSE-4 
•Supports +46 ~ +55 VDC power input 
•DIN-Rail Mounting