Socket 3
Intel computer processor socket that had 237-pin holes in 19 by 19 rows, ran at 3.3v and 5v, and compatible with the Intel 486SX, 486DX, 486DX2, 486DX4, and OverDrive processors. This socket is not compatible with 3v processors and often was found on motherboards that had a coprocessor socket. To the right, is an illustration of what this socket looks like.
Also see: 80486, OverDrive, Processor definitions, Socket