Lexmark OEM Lexmark T640 Paper Switch Activate SpringCompatibility:Lexmark T640,Lexmark T640DN,Lexmark T640DTN,Lexmark T640N,Lexmark T640RN,Lexmark T640TNLexmark T640 Paper Switch Activate SpringLexmark, LEX, 40X0048, Lexmark T640 Paper Switch Activate Spring, Spring;Brand: Lexmark