DLAN or Lan cable?

I have a router from this a cable goes to the basement. (Old office) From there I plan to put a cable through the basement and then through the ceiling into my room. A laptop. That's the plan. Only the connection in the cellar has not been used for 10 years. Does it matter? Or should I buy a Dlan adapter? What do you all mean?

Take the network cable.

Take the patch cord, it's faster.

Even if the management to which I connect it is 15 years? And where do I get the cable from?

Hmm. It depends on what was laid back then. Just try how fast the line is ^^

Is that true with a normal speed test?