This problem is caused by the specifications of the U2SCXU. Don’t remove
the U2SCXU while a scanner is scanning.
4-12.A message saying [The device “RATOC USB Mass
Storage Device WDM (withMPD) cannot be stopped because a program is still running”] appears when you try to remove the CBU2U removable icon(RATOC CB USB Enhanced Host Controller)(Win/Mac)
This problem is caused by the specifications of the U2SCXU. Remove the U2SCXU first before the CBU2U.
85