{HEAD ~ The BIOS clear button} 1, further comprising {TAIL ~ a positioning mechanism} is disposed in the connection part or in the body for generating a sound when the key is pressed to a positioning location for performing a BIOS clear operation 
comprising
{ HEAD ~ The BIOS clear button } 1 , further comprising { TAIL ~ a positioning mechanism } is disposed in the connection part or in the body for generating a sound when the key is pressed to a positioning location for performing a BIOS clear operation
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH