YoupurchaseaUSBboard,ISDNterminaladapterforyourWindows2000Professionalportablecomputer.YouplugthedeviceintotheUSBport.PlugandPlayfailstodetectthenewdevice.YoutestthedeviceonaWindows2000Professionaldesktopcomputer.Youfindthatplugandplaycorrectlydetectsthedevice.YouwanttoresolvetheproblemsothatyoucanuseISDNterminaladapteronyourportablecomputer.Whatshouldyoudo?（）
A.UsetheDeviceManagertoenabletheUSBmanagerroothub.
B.UsetheDeviceManagertoenabletheUSBhostcontrollerinthecurrenthardwareprofile.
C.ContactthehardwaremanufacturertoobtaintheupgradeforthePlugandPlayBIOS.
D.TurnoffthecomputerplugintheISDNterminalhostadapterandrestartthecomputer.
参考答案：C
