The RUGGEDCOM RS900G is an industrially hardened, fully managed Ethernet switch providing dual fiber optical Gigabit Ethernet ports and 8 Fast Ethernet copper ports; 128-bit Encryption; 2 Fiber Optical Gigabit Ethernet Ports (1000BaseX); 8 Fast Ethernet Ports (10/100BaseTX); Multiple fiber connector types (LC, SC, SFP Pluggable Optics); Bi-directional singlestrand fiber support; Long haul optics allow Gigabit distances up to 70km; HI = 88-300V DC or 85-264 VAC 0 = No power supply 2 D = DIN Rail Mounting xx = none XX = Manufacturing modification: none 2LCMM = Dual 1000SX Multimode LC 850nm 500m