Because I removed the electrical/logical connection of the usb port to the ps2.(as mentioned in my first post)
The port is not controlled by the ps2 hardware and is not being controlled/driven by the ps2 anymore. It is being used as a connection poiint from the IDE to USB adapter to the PC. The 2.0 ide to usb adapter's hardware is being used and not the ps2's.
So you lose one usb port to the ps2 if you dont like this there are other options
other options for this mod as stated would be
to leave the usb cord supplied with the adapter on or
to install a another usb port on the ps2. I found it simpler and cleaner to do it the way I did.