型号：LBH212A-P-SFP 
产品描述：Extreme Heavy-Duty Edge Switch, (2) SFP + (1) Copper Port, 24-VDC
详细描述：
 Two sets of LEDs enable you to see status information from the front, top, or side.
Supports VLAN tagging and spanning tree passthrough.
Includes 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 the Heavy-Duty Edge Switch from Black Box comes in.

The switch featured here is Extreme. But we also offer a Hardened version of our Heavy-Duty Edge Switches.