The RUGGEDCOM RX1500series is a utility gradelayer 2 and layer 3switch and router.2x power supply (Hot Swappable)Field replaceable line modulesUp to 24-ports 100FX Up to 24-ports 10/100TX Up to 8-ports Gigabit EthernetUp to 12 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 RS232/422/485HI =88-300 VDC or 85-264 VAC,screw terminal blockRM =19 Rack Mount KitL3 =Layer 3 SwitchXX =Manufacturing modification noneL2SE =Layer 2 Standard EditionFG50 =2x 1000LX SFP Blank(no optical transceiver)6TX01 =6x 10/100TX RJ45