The RUGGEDCOM RX1501series is a utility gradelayer 2 and layer 3switch and router.1x power supplyField replaceable line modulesUp to 36-ports 100FX Up to 36-ports 10/100TX Up to 4-ports Gigabit EthernetUp to 18 ports 10FL/100SXSC, ST, LC and MTRJPluggable Optics (SFP)Up to 4 T1/E1 portscellular (EVDO / HSPA), DDS(56K Master/Slave, 64K Slave)Up to 24 RS232/422/48548P =48 VDC (36-72 VDC),pluggable terminal blockNo power supply 2DP =DIN and Panel Mount KitL3 =Layer 3 SwitchXX =Manufacturing modification noneL3SECL3HW =Layer 3 Security Edition(with L3 HW)6TX01 =6x 10/100TX RJ45S01 =6x RS232/RS422/RS485 RJ45Serial Line ModuleBlank Module