< > Are you suggesting that IBM has produced over 10,000 different compute < > models? I doubt it! < < Maybe not 10,000, but certainly lots. Don't forget that the numbers cove < not only computers, but accessories, ATMs, cash registers, lab equipment < clocks, racks, typewriters, and other stuff. Either ways it's not an issue ans the numbering system is more than 4 digits. For example my 8550-031 (ps/2m50z) being differnt from the 8550-021 (PS/2m50). How else would they differentiate models in a family of products. Allison