he RUGGEDCOM RX1501 series is a utility grade layer 2 and layer 3 switch and router. 1x power supply Field replaceable line modules Up to 36-ports 100FX Up to 36-ports 10/100TX Up to 4-ports Gigabit Ethernet Up to 18 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 HI = 88-300 VDC or 85-264 VAC. screw terminal block No power supply 2 RM = 19 Rack Mount Kit L3 = Layer 3 Switch XX = Manufacturing modification none L3SECL3HW = Layer 3 Security Edition (with L3 HW) 6TX01 = 6x 10/100TX RJ45 APE1402 = APE. 1.3Ghz. 2GB RAM. 8GB SATA. Video. USB. Linux W51 = LTE CELL MODEM AT ( & ) T XX = Blank Module XX = Blank Module XX = Blank Module