usb port resistance?

Question

Iron

There is a suspicion of closed contacts in the ports of the laptop. Namely closed d+ and d- contacts. What resistance should d+ d- have? I checked the power contacts - increasing resistance (capacitor charging) is normal. I check the date of the contacts - 19 KΩ, does not read either a flash drive or a mouse ...

Answer 1

usb.fober.net/teoriya/Fizicheskij-interfejs

Answer 2

What will this information give you? The resistance there is definitely non-linear. All you can check is that there is no open or short circuit.