The product is a rare find of two IBM 05H0905 4 MB EDO RAM modules, designed for computers with SIMM form factor slots. These modules have a capacity of 4 MB each, a total of 8 MB for both, and are equipped with Error Correction Code (ECC) memory features. With a speed of 70 ns and 72 pins, this memory is ideal for vintage computers seeking high-quality and reliable performance. These IBM modules are tested and guaranteed to provide optimal performance for your system.