RUGGEDCOM RX1524 is a rugged modular Layer 2 switch + Layer 3 router that supports up to 2 load sharing, hot-swappable power supplies; Field-replaceable line module options include: up to 24 100FX ports; up to 24 10/100TX ports; up to 8 Gigabit Ethernet ports; up to 12 10FL/100SX ports; ST, LC, and M12 connector types on various modules; up to 4 cellular ports (3G/LTE); up to 24 RS232/422/485 serial interface ports; up to 2 APE1808 application housing modules HI = 88-300 V DC or 85-264 V AC, screw terminal block HI = 88-300 V DC or 85-264 V AC, screw terminal block RM = 19" rack mounting kit L3 = Layer 3 switch XX = Manufacturing modification: none L3SECL3HW = Layer 3 Security Edition (with L3 HW) XX = blanked module 6TX01 = 6x 10/100TX RJ45 6TX01 = 6x 10/100TX RJ45 6TX01 = 6x 10/100TX RJ45