RUGGEDCOM RS900NC is a 9-port, industrially hardened, fully managed Ethernet switch with 56-bit encryption supporting 6 Fast Ethernet RJ45 ports and up to 3 Fast Ethernet Fiber ports available over multiple fiber connector types and distances. 24 = 24 VDC (10-36 VDC) XX = No power supply 2 P = Panel Mounting xx = none XX = Manufacturing modification: none T2-T2 = 2 x 100FX - Singlemode 1310nm, ST connector, Standard 20km T2 = 1 x 100FX - Singlemode 1310nm, ST connector, Standard 20km