RUGGEDCOM RSG2488 is a RuggedRated fully managed Ethernet switch; 128-bit Encryption; up to 28 non-blocking ports; configured as: 10/100/1000TX copper, 100FX or 1000SX fiber. Support six 4-port modules plus two 2-port modules Mixture of fiber optic or copper Gigabit ports with up to 28 Gig Ethernet ports; -40 °Cel to +85 °Cel operating temperature (fanless) 48 VDC (37-72 VDC), screw terminal block 48 VDC (37-72 VDC) 19 Rack Mount Kit . Manufacturing modification: Conformal Coating Precision time protocol (PTP) Module: GPS in, IRIG-B AM/TTL in/out 4x 10/100/1000Tx RJ45 4x 10/100/1000Tx RJ45 4x 10/100/1000Tx RJ45 4x 10/100/1000Tx RJ45 4x 10/100/1000Tx RJ45 2x 10/100/1000Tx RJ45 2x 10/100/1000Tx RJ45