RUGGEDCOM RST2228 is a fieldmodular, fully managed Layer2 Ethernet switch with 4 x1/10 GBit/s and 24 x 100/1000MBit/s non-blocking e thernetports. Support for up to six4-port media modules withRJ45, SFP or LC interfaces -40...+85 C operatingtemperature (fanless) 128-bit encyption..19 Rack / Panel mount kitHI Voltage (88-300 VDC/85-264VAC) with screw terminalHI Voltage(88-300 VDC/85-264 VAC)with screw terminalNo power supplyNoneLED Panel mounted on the front(connector side)RUGGEDCOM RMM2931-4 (BlankModule)RUGGEDCOM RMM2931- 4(Blank Module)RUGGEDCOM RMM2973-4RJ45 ( 4 xRJ45, 10/100/1000 BASE-TX)RUGGEDCOM RMM2973-4RJ45( 4 x RJ45, 10/100/1000 BASE-TX) RUGGEDCOM RMM2931-4