6-port unmanageable switch, 4 of them PoE

specs

Layer 2 Unmanageable PoE Commercial Switch 4 10 / 100Mbps PoE RJ45 ports 2 Uplink RJ45 10 / 100Mbps ports PoE consumption: ≤60W (port 1), ≤30W (ports 2 to 4), ≤60W in total PoE protocols: IEEE802.3af (PoE), IEEE802.3at (PoE +), Hi-PoE Communication standard: IEEE802.3, IEEE802.3u, IEEE802.3x Selectable CCTV mode (distance up to 250 meters) 1.8Gbps switching capacity 0.89Mbps packet transfer rate Packet buffer memory: 1MB 2K MAC table Power supply: 53V DC Storage temperature: -20 ° C ~ + 70 ° C Operating temperature: -10 ° C ~ + 55 ° C Operating relative humidity: 5% ~ 95% Dimensions: 130 (W) x 26 (H) x 85 mm Net Weight: 300g Gross weight: 900 g