The RUGGEDCOM RX1511 series is a utility grade layer 2 and layer 3 switch and router in a compact form factor. 1x power supply Field replaceable line modules Up to 12 10/100BaseTx, Up to 8 Gigabit Ports Up to 12 100BaseFx Ports Up to 8 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 24= 24 VDC (15-36 VDC), screw terminal block No power module 2 DPV = DIN and Panel Mount Kit L3 = Layer 3 Switch XX = Manufacturing modification none L3SECL3HW =Layer 3 Security Edition (with L3 HW) TC2 = 2x T1/E1 RJ48 (channelized/unchannelized) 6TX01 = 6x 10/100TX RJ45 XLE