D-Link 20-Port Gigabit Smart Managed Switch including 4 SFP ports vs D-Link 28-Port Gigabit Smart Managed Switch including 4 Combo Ports

Key differences

• Basic switching RJ-45 Ethernet ports quantity
  • 20-Port Gigabit Smart Managed Switch including 4 SFP ports:16
  • 28-Port Gigabit Smart Managed Switch including 4 Combo Ports:24
• Switching capacity
  • 20-Port Gigabit Smart Managed Switch including 4 SFP ports:40 Gbit/s
  • 28-Port Gigabit Smart Managed Switch including 4 Combo Ports:56 Gbit/s
• Noise level
  • 20-Port Gigabit Smart Managed Switch including 4 SFP ports:0 dB
  • 28-Port Gigabit Smart Managed Switch including 4 Combo Ports:55.2 dB
• Mean time between failures (MTBF)
  • 20-Port Gigabit Smart Managed Switch including 4 SFP ports:1087100 h
  • 28-Port Gigabit Smart Managed Switch including 4 Combo Ports:992594 h
• Power consumption (max)
  • 20-Port Gigabit Smart Managed Switch including 4 SFP ports:13.08 W
  • 28-Port Gigabit Smart Managed Switch including 4 Combo Ports:17.32 W
• Storage temperature (T-T)
  • 20-Port Gigabit Smart Managed Switch including 4 SFP ports:-20 - 70 °C
  • 28-Port Gigabit Smart Managed Switch including 4 Combo Ports:-40 - 70 °C
• Heat dissipation
  • 20-Port Gigabit Smart Managed Switch including 4 SFP ports:44.62 BTU/h
  • 28-Port Gigabit Smart Managed Switch including 4 Combo Ports:59.09 BTU/h
• Width
  • 20-Port Gigabit Smart Managed Switch including 4 SFP ports:280 mm
  • 28-Port Gigabit Smart Managed Switch including 4 Combo Ports:440 mm