Number of ports (Downstream): 4X10/100Base-TX Number of ports (Uplink): 1X100Mbps SFP Port i 1X10/100Base-TX Standards: IEEE802.3, IEEE802.3u, EEE802.3 X Switching capacity: 1,2 Gbps PoE Standard: 802.3af/at PoE Budget: 60 W max Lightning protection: 6KV, Execute: IEC61000-4-5 ESD: 6KV Contact discharge, 8KV Air discharge, Execute: IEC61000-4-2 Power supply: DC 48~57V Operating temperature: -40℃~75℃ Dimensions: 159mm×110mm×46mm Weight: 530g