Thomas Franz's variable resistor mod:

If you have the pro card then you may experience one set of resistor values working with one port, but not the other.

In practice, port one is better linked to the dc with the 110 ohm resistors, but port 2 usually may need different values for full speed from the dc to the pc.

For Example: Thomas Franz was one of the people who had problems with the 110 ohm resistance, he achieved full speed by using variable resistors.

He found that his lead worked best by setting 125 ohm on the white wire and 118 ohms on the blue...