SB80486DX2-40 on a board taken from an old laser printer (of which I no longer have details). A picture of the whole board is at http://www.ukcpu.net/Collection/Processors/Intel/x86/80486/80486DX2_Images/SB80486DX2-40_SX769_Board.jpg , and that picture can also be used if helpful.
SX769
SB80486DX2-40 on a board taken from an old laser printer (of which I no longer have details). A picture of the whole board is at http://www.ukcpu.net/Collection/Processors/Intel/x86/80486/80486DX2_Images/SB80486DX2-40_SX769_Board.jpg , and that picture can also be used if helpful.