型号：LBH240A-H-ST-48 
产品描述：Hardened Heavy-Duty Edge Switch, (4) 10/100 Copper + (2) Fiber Ports, Multimode, 48-VDC, ST       
详细描述： Two sets of LEDs enable you to see status information from the front, top, or side.
Support VLAN tagging and spanning tree passthrough.
Include Link-Loss-Learn (LLL) feature for fast network recovery.

Unlike the Ethernet switches in your wiring closet or computer center, the Ethernet switches at the edges of your

 network have to put up with the bumps and dirt that happen out in the real world. This is where Heavy-Duty Edge

 Switches from Black Box come in.

The switches featured here are our Hardened models, but we also offer Standard and Extreme versions of our

 Heavy-Duty Edge Switches. Because all three types work together seamlessly, you can use the inexpensive 

Standard Switches in protected office environments and choose the more robust Hardened or Extreme 

Heavy-Duty Edge Switches for harsh locations at your network's edge.