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google搜一下了。

merymaid(merymaid)

All of the Ethernet ports of the DGS-3000-10TC support 6kV surge/lightning protection. This feature protects the switch from power surges due to lightning or improper electrical wiring when the Ethernet cables are exposed in open spaces, such as in old buildings.

http://www.dlink.com/uk/en/business-solutions/switching/managed-switches/layer-2/dgs-3000-10tc-10-port-gigabit-l2-switch

(#9207224@0)
Last Updated: 2015-1-21
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枫下家园 / 电脑电信 / 想要个有 SURGE PROTECTION 的 10+ PORTS 的 SWITCH，能买到么？ -meisuowei(.); 2015-1-20 (#9205764@0)

哪位亲给推荐一个？ -meisuowei(.); 2015-1-21 (#9206191@0)

this one is very good, 12 port , reviews are 5 star, it is also on sale -johnchengcn(johncheng); 2015-1-21 (#9206330@0)

更正：想要个有 SURGE PROTECTION 的 10+ PORTS 的 ETHERNET SWITCH，能买到么？谢谢。 -meisuowei(.); 2015-1-21 (#9206336@0)

anybody, plzzzzz? -meisuowei(.); 2015-1-21 (#9206684@0)

Google is your best friend. I have been working in networking industry for more than 20 years, I haven't heard about this, maybe I am too old and already out. If you find one, please share that information here -yunzhang(yunflier); 2015-1-21 (#9206720@0)

then how do you protect each cat5 or 6 coming from all different sources? or you don't? -meisuowei(.); 2015-1-21 (#9206729@0)
好久没见你上来了：） -akoei(停车**枫林晚); 2015-1-21 (#9206907@0)

没看懂。你买个带 SURGE PROTECTION 的接线板不就得了。 -holdon(again); 2015-1-21 (#9207152@0)

光电隔离可以做到，但是似乎没有相似的产品。楼主可以先说说用途，大家给出出主意。 -merymaid(merymaid); 2015-1-21 (#9207203@0)

有不同来源的 8 个 DEVICE，要用 8 条 CAT 电缆。我希望这些电缆进来的时候先到 SURGE PROTECTORS，然后再到 SWITCH。就合计有没有 SWITCH 直接带 SURGE PROTECTION 的功能。 -meisuowei(.); 2015-1-21 (#9207213@0)

google搜一下了。 -merymaid(merymaid); 2015-1-21 {263} (#9207224@0)
All of the Ethernet ports of the DGS-3000-10TC support 6kV surge/lightning protection. This feature protects the switch from power surges due to lightning or improper electrical wiring when the Ethernet cables are exposed in open spaces, such as in old buildings.
http://www.dlink.com/uk/en/business-solutions/switching/managed-switches/layer-2/dgs-3000-10tc-10-port-gigabit-l2-switch

这个看起来真好。谢谢了。 -meisuowei(.); 2015-1-21 (#9207672@0)

@Sacramento

google搜一下了。

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