Standard IEEE 802.3 10BASE-T , IEEE 802.3u 100BASE-TX , IEEE 802.3ab 1000BASE-T , IEEE 802.3z 1000BASE-SX/LX (GBIC) , IEEE 802.3af DTE Power via MDI (12,36 pin) Interface 24 x 10/100Mbps Auto-negotiation, Auto-MDIX PoE ports (port 1 ~ port 24), 4 x 10/100/1000Mbps Auto-MDIX Gigabit Ethernet ports (port 25 ~ port 28) 2 x mini GBIC ports, share with 2 1000BASE-T ports(port 25 ~ port 26) Management Supports 802.1Q VLAN with 256 VLAN groups Supports 802.1p Priority Queues Supports static Port Trunk (Support Maximum 6 groups per device and 8 ports per group). Supports Port Mirroring Supports Broadcast Storm Control Supports DHCP Client Supports Port setting function allow user setting each port, speed, duplex mode and configure through Web browser Supports Port-setting for Speed/Disable, QoSPoE Up to 15.4W for PoE per port Maximum 170W for all PoE ports (per device) PD classification identify, Manual setting for PoE power limitation Supports PoE Priority setting PoE Over Current Protection PoE Circuit sorting protection PoE Power on RJ-45 pin 3,6 for Power(+) and pin 1,2 for Power(-) Power Supply 26.5 watts. (max. no PD device connected) 196.5 watts (max. for up to 11 PoE Device connected) Protocol CSMA/CD Topology Star Network Data Transfer Rate Ethernet *10Mbps (Half-duplex) *20Mbps (Full-duplex) Fast Ethernet *100Mbps (Half-duplex) *200Mbps (Full-duplex) Gigabit Ethernet *2000Mbps (Full-duplex) Bandwidth 12.8 Gbps Buffer memory 128KBytes Address table 8K LED indicators Per Unit: Power, System ( 2 LEDs ) Per port: TX: Link/Activity, Speed ( 2 LEDs ) PoE: PoE Status (port 1 ~ port 24) (bi-color LED) Per Copper Gigabit Port: Link/ACT, 1000M, 100M Per GBIC Gigabit Port: Link/ACT, 1000M Power: 100 - 240VAC 50/60Hz, Internal Universal Switching PowerPower: 100 - 240VAC 50/60Hz, Internal Universal Switching Power Temperature Operating: 0 to 40°C Storage -10 to 70°C Humidity Operating: 10% ~ 90% Storage: 5% ~ 90% Emission CE Class A FCC Part 15 Class A, VCCI-A Safety cUL (UL 60950) CB(IEC 60950) Product Weight (g) 3215 g Dimensions ( L x W x H (mm) ) 440 x 210 x 44 mm