Gigabit Switch, Unmanaged, 4x PoE, 2x RJ45 and 2x SFP, 1000Mbps, Industrial Design • Gigabit Uplink ports 2xRJ45, 2xSFP • 4x 10/100/1000 PoE Ports,IEEE 802.3af/at • Surge protection IEC61000-4-5 (6KV) • Status LED: Uplink, PoE, Optical port, Power • Temperature range -40° C ~ +75° C