... Modular design, supports hot plug and play, easier to maintain equipment, upgrade; built-in LCD panel, convenient ... :HDB3;Interface impedance: 75Ω or 120ΩEthernet interface10/100BASE-T , RJ45Power supply voltage (V)DC -48V±20% ... , RJ45Software upgrade interface115.2kbit/s, RS232C, RJ45Management interface100Mbit/s, 10/100BASE-T, RJ45Operating systemWIN2000 / WINDOWS NT / WINXPMechanicsSize (mm)IDU:482 ...