Unmanaged PoE Switch Compliant with IEEE802.3, IEEE802.3u, IEEE802.3ab, IEEE 802.3z, IEEE 802.1Q, and IEEE802.3x Ethernet standards 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.