File:Motorola MC68882RC50A coprocessor.jpg

A 50MHz PGA version of a Motorola 68882 floating-point unit (FPU), similar to one used in a DayStar PowerCache upgrade. The 68882 was designed for use with a Motorola 68030, such as the one in the Macintosh IIx and the Macintosh IIfx.

Source

 * File:68882.jpg by NaSH / Bilou~commonswiki, Wikimedia Commons. 2004-08-03 / 2007-02-05.