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Should I be using a router or a switch to connect Ethernet controlled devices?

Hi folks,

I'm working on a project that will involve a few things communicating over Ethernet, and I'm wondering if I should be looking to buy a switch or a router.

The Ethernet stuff on the project includes:
- A PC
- An internet connection to the PC (I'm plugging into an already-existing network for this)
- Two programmable power supplies controlled by the PC via Ethernet
- Communication with another computer over Ethernet (no Internet involved)

The PC only has 2 Ethernet ports, so I'm wondering whether a switch or a router is what I need to expand that to the 4 that I will need.

Any insight?


Thanks!
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  1. Best answer
    Without knowing what is upstream of the currently connected PC, impossible to give a definitive answer.

    "- An internet connection to the PC (I'm plugging into an already-existing network for this)"

    It would seem a switch is what is needed. Plug the cable currently going to that PC into the switch. Then plug both PC and whatever other devices into the switch.

    But without knowing more of the infrastructure, that could be completely wrong.
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