The RUGGEDCOM RX1500 series is a utility grade layer 2 and layer 3 switch and router. 2x power supply (Hot Swappable) Field replaceable line modules Up to 24-ports 100FX; Up to 24-ports 10/100TX; Up to 8-ports Gigabit Ethernet Up to 12 ports 10FL/100SX SC, ST, LC and MTRJ Pluggable Optics (SFP) Up to 4 T1/E1 ports cellular (EVDO/HSPA), DDS (56K Master/Slave, 64K Slave) Up to 24 RS232/422/485