A4Tech Wired Keyboard USB KK-3

24*10/100 Base-TX Ethernet ports, one 10/100/1000 Base-T Ethernet port and one 10/100/1000 Base-X SFP optical module port

Ports 1 – 24 are 10/100 Mbps downlink ports and comply with IEEE 802.3af and IEEE 802.3at.

The maximum of 30W port output PoE power and the maximum of 225W total output PoE power

Support four network modes: Priority, Standard, Isolate and Extend

4K MAC address and MAC address learning

8.8 Gbps backplane bandwidth

Store-and-Forward switching

All-mental construction

13 inch length and 1 U standard height size allow it to be mounted on subrack.