RUGGEDCOM RS900NC Is an industrial hardened 9-port fully managed Ethernet switch 56-bit encryption up to 9 ports 6 x 10/100 base ports with OPTION FOR 3 ADDITIONAL GLASS FIBER OR copper ports GLASS FIBER CONNECTIONS ACCORDI industrial standard LC. SC. ST. MTRJ Mulitmode and single-mode Optical bus couplers Optical long-haul components PERMIT DISTANCES UP TO to 90 km 24 = 24 VDC (10-36 VDC) XX = No power supply 2 D = DIN rail mounting xx = none XX = manufacturing modificationnone T2-T2 = 2 x 100FX - single-mode 1310 Nm. ST connector. Standard 20 km T2 =1 x 100FX - Single mode 1310 Nm. ST connector. Standard 20 km