This vintage BUT new IBM RAM module, part number 92F3337 and FRU number 68X6343, offers a memory capacity of 4MB and fits into a 72-pin SIMM slot. This item is compatible with various IBM computer models, and its authenticity is confirmed by the FRU number stamped on it. they were made in 1997 by OKI with OKI P/N: MSC23136C-80BS10A.Whether you are a collector of vintage computer parts or in need of a reliable memory module for your IBM system, this product is a great addition to your collection.