注册表修改USB状态(开与关) 1.注册表开启USB [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR] 修改"Start"=dword:00000003,即USB打开.2.注册表禁止USB [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR] 修改"Start"=dword:00000004,即USB关闭.