product manual: 1. Full-duplex IEEE802.3x standard, half-duplex using Backpressure standard; 2. 7 10 / 100M adaptive RJ45 POE power supply port, a 100M UPLINK port; 3. Support port auto flip function; Transmission using storage - forwarding mechanism to provide full line speed forwarding rate to data integrity; 4. Automatically maintain address list, support two-way address learning function; 5. Each port provides its own bandwidth, providing true non-blocking transmission; -rating: 2.0KV Power supply: DC 24V 5A Material: Plastic colour: black Package Contents: 1 x poe switch(No power adapter) 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.