This is a 50 Mhz math co-processor (Floating Point Unit) for some Amiga memory cards and accelerators such as the Blizzard 1230 and Microbotics XA 1230 accelerators.
 
It will accelerate all maths intensive programs and allows your Amiga to software that requires an FPU.
 
 

Specifications description Floating Point Unit Math Co-processor speed 50Mhz package Pin Grid Array (PGA) motorola part no MC68882RC50A condition refurbished and guaranteed