For USB 2.0 data differential pair (D+ D-), is 65 ohm single-ended impedance OK?

[oway]

Our PCB single-ended impedance of USB 2.0 data differential pair (D+ D-) is 65 ohms (and the differential impedance is 90 ohms).

Is this OK? 

If not OK, what symptoms can we expect?

[Rita_Wang]

The differential impedance is 90 ohms. You can refer to our hardware design documents and refer to the reference board design.