The RUGGEDCOM M2100 is an MIL-STD hardened, fully managed, modular Ethernet switch; 128-bit Encryption; Up to 3-Gigabit and 16-Fast Ethernet ports, copper and/or fiber, 2 port per module; Non-blocking, store and forward switching; Supports multi-types of fiber (multi/single-mode, ST/LC/Micro-D connectors, Bi-directional single strand) Long haul optics allow Gigabit distances up to 70km. A fixed M2100 configuration with short jackscrews, plus the unique IUID label showing both customer P/N and Siemens MFG P/N