Physical Port

• 24-port 10/100/1000BASE-T RJ45 copper with PoE injector function
• 4 10/100/1000BASE-T RJ45 copper interfaces
• 2 1000BASE-X SFP combo interfaces, shared with Ports 27~28 

Power over Ethernet

• Complies with IEEE 802.3at Power over Ethernet Plus end-span PSE
• Up to 24 ports of IEEE 802.3af / 802.3at devices powered (ports 1~24)
• Supports PoE power up to 32 watts for each PoE port, with a total PoE budget of 250W.
• Each port supports 54V DC power to PoE powered device.
• Auto detects powered device (PD)
• Supports PD alive function. 
• Circuit protection prevents power interference between ports.
• Remote power feeding up to 100m in standard mode with 250m in extend mode 

Switching

• Hardware-based 10/100/1000Mbps auto-negotiation and auto MDI/MDI-X
• Supports IEEE802.3x flow control in full-duplex mode and backpressure in half-duplex mode
• Integrates address look-up engine, supporting 8K absolute MAC addresses
• 9K jumbo frame supports all speeds (10/100/1000Mbps)
• Hardware-based DIP switch for Standard, VLAN or Extend mode selection; 
  • VLAN mode: Ports 1~24 cannot communicate with each other, but can communicate with the uplink ports 25~28 and SFP ports 27~ 28
  • Extend mode: Ports 1~8 have data rate of 10Mbps. The farthest transmission distance is up to 250 meters and all ports can communicate with each other. 
• VLAN mode is to isolate ports to prevent broadcast storm and defend DHCP spoofing
• Automatic address learning and address aging 

Hardware

• 19-inch rack-mount size, 1U height
• LED indicators for system power, per port PoE ready and PoE activity, speed, Link/Act
• 2 fans to provide stable and efficient power performance
• Supports contact discharge of ±6KV DC and air distance discharge of ±8KV DC for Ethernet ESD protection
• Supports  ±6KV surge immunity