RUGGEDCOM RSG2100 is an industrially hardened, fully managed Ethernet switch; 128-bit Encryption; Up to 3-Gigabit Ethernet ports copper and/or fiber; Up to 16-Fast Ethernet ports copper and/or fiber; 2 port modules for tremendous flexibility; Non-blocking, store and forward switching; Supports many types of fiber (multimode, singlemode, Bi-directional single strand) Long haul optics allow Gigabit distances up to 70km Multiple connector types (ST, MTRJ, LC, SC, RJ45, micro-D) HI = 88-300 VDC or 85-264 VAC, screw terminal block HI = 88-300 VDC or 85-264 VAC, screw terminal block RM = 19" Rack Mount Kit F = Ethernet on front; LED panel on front; power connector on rear XX = Manufacturing modification: none FX11 = 2x 100FX - multimode 1310nm, LC TX01 = 2x 10/100TX RJ45 TX01 = 2x 10/100TX RJ45 TX01 = 2x 10/100TX RJ45 FG51 = 2x 1000LX SFP - multimode, 850nm, LC, 500m (SFP1122-1SX) 1CG01 = 1x 10/100/1000Tx RJ45 FX11 = 2x 100FX - multimode 1310nm, LC FX11 = 2x 100FX - multimode 1310nm, LC FX11 = 2x 100FX - multimode 1310nm, LC FX11 = 2x 100FX - multimode 1310nm, LC