Interface type:1x10/100/1000/2500Mbps RJ45 Data IN,1x10/100/1000/2500Mbps RJ45 PoE OUT,1xDC IN(3P) power terminal,1xDC2.0 power interface, Switch: 1 voltage adjustment switch Power input:DC2.0: 36-48V/5A(MAX),5.08mm_3P terminal: 12-48V/10A(MAX),STL output: 24Vdc(SPoE)/51Vdc(second generation), STL output power:MAX: 75W (DC12V IN/24Vdc OUTPUT),MAX: 90W (DC12V IN/51Vdc OUTPUT),MAX: 150W (DC48V IN/51Vdc OUTPUT), Network protocol:IEEE802.3 10BASE-T; IEEE802.3i 10Base-T; IEEE802.3u 100Base-TX; IEEE802.3x; IEEE802.3ab 1000Base-T; IEEE802.3bz 2.5GBase-T; PoE pin definition: STARLINK (1236+, 4578-) Transmission distance: STARLINK/SPoE: 100/1000/2500Mbps 0-100m (CAT5e, CAT6), STARLINK/SPoE: 10Mbps 0-250m (CAT5e, CAT6) Transmission medium: 10BASE-T: Cat3, 4, 5 and above twisted pair 100BASE-TX, 1000Base-T: Cat5, 5e, 6 and above twisted pair 2.5GBase-T: Cat5e, 6 and above twisted pair Heat dissipation: natural heat dissipation Protection level: IP40 EMC: Power surge protection: IEC 61000-4-5 4KV/2KV (8/20us) Network port surge protection: IEC 61000-4-5 4KV/2KV (10/700us) Anti-static interference ESD: IEC 61000-4-2 8K/15K LED lights: PWR (Power): Power indicator PoE: PoE on indicator DIN: DC2.0 power access indicator STL: STARLINK line sequence indicator PoE: PoE power output indicator Specifications: A:EC550-SKV2/B:EC550-SKV3 Colour:Silver&Gray Material:Aluminum Alloy<br><br>Package Contents: 1 x POE power supply 1 x DC terminal block 1 x installation fixing strip (Different batches have random words on the product, Do not accept the specified words,which does not affect the use) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.