Question

Upstream vs Downstream Ports

Occasionally I see specs for PC that say there are X number of USB upstream ports and Y number of USB downstream ports. What are upstream and downstream ports and why is this important to me?

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Answer
I've seen that for over a decade

And it's never been a deciding factor. But consider this -> If the seller and maker will not talk to you about their product, why consider them at all?
Bob

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Answer
Usually for USB hubs

USB upstream and downstream ports usually refer to ports on a USB hub. An upstream port connects to the host device (PC) while the downstream ports are where you plug in peripheral devices (thumb drives, printers, etc.).

So, it would be confusing if the terms were used for ports on a host device. If you can post a link for the PC specs, someone may be able to further clarify the usage of these ports. Happy

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In addition...

If a monitor with USB ports is included in the PC system, it would have an upstream port (to connect to the PC) and several downstream ports for peripherals . It's possible that the specs are showing these as being the ports in question.

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