Engadget
Why Do Some PCs Have Two Ethernet Ports?
Having a second Ethernet port lets your computer work on multiple networks at once, which isn't always important at home but can have its uses.
Via Engadget
·Excerpt
Your PC probably doesn’t need both ports, but workstations and servers can put them to work.
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The two Ethernet ports on some PCs aren't a matter of aesthetics or a simple selling point. Their primary purpose is to provide the computer with more networking options, like backup connections or separate networks. If it's configured for failover and you lose a network connection on one, you still have access through the other. In most cases, it's a feature that's…
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