The RUGGEDCOM RS910 is an industrially hardened serial device server with an integrated, fully managed, Ethernet switch; 128-bit Encryption; 2 serial ports (RS485/RS422/RS232) and/or up to 3 Ethernet ports (copper or fiber). multimode singlemode; Multiple connector types (ST, MTRJ, LC, SC) HI = 87-264 VAC or 88-300 VDC No Power Module 2 D = DIN Rail Mounting none XX = Manufacturing modification: none S3 = 2 x Fiber 850nm ST TX01 = 2 x 10/100TX RJ45 TX = 1 x 100BaseTX - RJ45 connector