a support unit for supporting the second end portion of the stopper, {TAIL ~ the support unit} being provided to {HEAD ~ the electronic device}, 
a support unit for supporting the second end portion of the stopper , { TAIL ~ the support unit } being provided to { HEAD ~ the electronic device } ,
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH