The GBTS-28-24-M, as a fan-less full gigabit Managed BT PoE switch, provides reliable, cost-effective, high power PoE. It features twenty-four 10/100/1000Base-T Ethernet PoE ports, four 10/100/1000 Base-T Ethernet Uplink ports, and four 1000Base-X SFP Slots. The switch also includes HTML based L2 managed functions, including IGMP Snooping QVLAN, QoS, DHCP and Fast-ring and PoE control. This switch brings cost-effective, ring networked technology to lighting, security monitoring, enterprise park, and other applications. 24 x 10/100/1000Mbps Ethernet PoE ports. 4 x 10/100/1000Mbps Uplink ports. 2 x 1000Mbps SFP Slots. Ports 1-24 output IEEE802.3at/af/bt. Features DC power input for a centralized DC Power plant-see the PoE Texas rectifier. Total PoE power budget is 2.16kW, max PoE power for the single port is 90W. Includes PoE watchdog and support. Supports Layer 2 managed functions, including DHCP, Fast-Ring, IPv6, etc. Fan-less, wave metal shell, and low power consumption design. 8Link/Act (Green), 8PoE (Orange), 1PWR (Red). 1/2/4/5(+), 3/6/7/8(-). PoE output power for single port=90W, Total PoE power budget= 2.16kW. IEEE802.3, IEEE802.3u, IEEE802.3ab, IEEE802.3Z, IEEE802.3X, IEEE 802.3ad, IEEE 802.3q, IEEE 802.3q/p, IEEE802.1w, IEEE 802.1D, IEEE 802.1s IEEE 802.1af/at/bt. 410/100/1000Base-T / 41000Base-X SFP Slots.