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Ethernet shields are neither input or output, they are both. Generally they are used as a transceiver where data is sent and received by the same shield over the same cable. If you can open a web page with it, it is working just fine both sending and receiving. I believe your best solution is to purchase a small ethernet switch, they are only a few shekels ...


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Recommend you check that your CPU heat sink is still well-attached. Sometimes overheating will slow things down although they are still marginally functional. For example, simple command line functions like ping and ssh are the last to remain working.


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