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An uplink port generally means a port used that connects toward the core of the network.
A downlink port generally mean the converse.
In this particular usage, the switch's downlink ports are dual speed copper ports. The uplink ports are gig and copper/fiber capable. The expectation might be users hosts will connect to the downlink ports and the uplink ports will take the aggregate traffic into the rest of the network.
However, you might have one of the "uplink" ports connect to a server (or even both, if there is no larger network).
You're not bound to how you use downlink vs. uplink ports, although sometimes they are hardware different and sometimes they are not.
