In this packet filtering is available.
Imagine a file explorer without any images or visual layout that you can use to navigate.
Followed instructions, but the very next step is failing me as I can't get the portal to find my hub.
In fact Windows even gives you keyboard shortcuts for the split scenario you describe, and you can try this even on your laptop's built-in display.
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If you only need to connect a few computers on one network, a switch is an ideal solution since they're cheaper than a router.