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研华网管型工业以太网交换机EKI-7712E：
研华EKI-7712E-4F/4FI支持8个百兆以太网端口和4个SFP端口。它提供了丰富的端口来连接许多设备，并嵌入了研华的IXM功能，有利于用户在短时间内完成快速部署，大大节省工程师的时间与成本。EKI-7700系列支持NMS软件帮助IT管理者进行网络维护和故障预防，还支持研华冗余环网协议X-Ring Pro，可搭建可靠地工业网络，帮助用户轻松建立冗余以太网，具有小于20ms的超高速自愈时间。同时具备NEMA TS2认证等级及-40~75°C的工作温度范围（EKI-7712E-4FI），通过EN50121-4欧洲铁路标准对铁路站台和轨旁部署的排放和抗扰度要求认证标准，为智慧交通和铁路提供优质方案
研华EKI-7712E特点：
1.8个百兆以太网接口，4个千兆SFP插槽
2.SFP 插槽可进行简单灵活的光纤扩展
3.冗余：X-Ring Pro( 超高速自愈时间<20ms)，RSTP/STP/MSTP（802.1w/1D/1s）
4.IXM自动快速布建功能
5.安全 : 802.1x (Port-Based, MD5/TLS/TTLS/PEAP Encryption),RADIUS
6.管理：SNMP v1/v2c/v3,WEB,Telnet,StandardMIB,Private MIB
7.铁路和交通认证：EN50121-4， NEMA TS2
8.工作温度：-40～75°C(EKI-7712E-4FI)
9.电源：两路12～48VDC 电源输入， 1路继电器输出规格书：
