INTERFACE: This is 2x10/100/1000Base-X SFP uplink port and 4x10/100/1000Base-TX Gigabit RJ45 ports with POE AT (30w each RJ45 port) industrial POE fiber switch. (Not include SFP module and power adapter EXTREME TEMPERATURE SWITCH: This Gigabit PoE+ Fiber Switch is equipped with a rugged IP40 rated enclosure and designed to withstand a high degree of vibration, shock, protection against ESD / EMI / surge, and operate with a wide temperature range (- 40 75 °C (- 40 - 167 °F)) for harsh environments.