What are the differences between 40G-SR and 40G-iSR optical modules

40G-SR and 40G-iSR optical modules provide similar features and can communicate with each other. They differ in the maximum transmit power. A 40G-iSR optical module has lower maximum transmit power than a 40G-SR optical module.

Compared to 40G-SR optical modules, 40G-iSR optical modules are more suitable for connecting to four 10GE-SR optical modules when 40GE ports are split into 10GE ports.

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