|   Certification   |  
  |   Layer   |    Layer 2   |  
  |   Managed   |    No   |  
  |   Switching Capacity   |    52 Gbps   |  
  |   Packet Forwarding Rate   |    38.688 Mpps   |  
  |   Packet Buffer Memory   |    4 Mbit   |  
  |   MAC Table Size   |    8K   |  
  |   Standards Compliance   |    IEEE802.3, IEEE802.3u, IEEE802.3x, IEEE802.3ab, IEEE802.3z   |  
  |   Hardware Feature   |  
  |   Standard Power Supply   |    Yes   |  
  |   PoE   |    Yes   |  
  |   Ethernet Port   |    24   |  
  |   Optical Port   |    2   |  
  |   Ethernet Port Rate   |    1 Gbps   |  
  |   Optical Port Rate   |    1 Gbps   |  
  |   Number of Bussiness Card Slots   |    Port 1–24: 24 × RJ45 10/100/1000 M (PoE)  Port 25–26: 2 × RJ45 10/100/1000 M (uplink)  Port 27–28: 2 × SFP 1000 M (uplink)   |  
  |   Power Supply   |    100V AC–240V AC   |  
  |   Operating Temperature   |    –10°C to 55°C (14°F to 131°F)   |  
  |   Operating Humidity   |    10%–90%   |  
  |   Storage Humidity   |    5%–95%   |  
  |   Power Consumption   |    Idling: 8W  Full load: 360W   |  
  |   PoE   |  
  |   PoE Standard   |    IEEE802.3af, IEEE802.3at, Hi-PoE, IEEE802.3bt   |  
  |   PoE Budget   |    Port 1–2≤90W, Port 3–24≤30W, total≤360W   |  
  |   PoE Pin Assignment   |    PoE/Hi-PoE: 1, 2, 4, 5 (V+), 3, 6, 7, 8 (V-)   |  
  |   General   |  
  |   ESD   |    Air discharge: 8kV  Contact discharge: 6kV   |  
  |   Thunderproof   |    Common mode: 4kV  Differential mode: 2kV   |  
  |   Dimensions   |    440 mm × 300 mm × 44 mm (17.32" × 11.81" × 1.73")   |  
  |   Packaging Dimensions   |    527 mm × 412 mm × 110 mm (20.75" × 16.22" × 4.33")   |