The I-O Print Box TxP plus turns an ASCII laser or dot-matrix printer into a powerful Twinax SCS printer. It attaches virtually to any ASCII printer with a parallel port to an IBM AS/400, iSeries or eServer i5 host. The I-O Print Box CxP plus turns an ASCII laser or dot-matrix printer into a powerful Coax SCS printer. It attaches virtually any printer with a parallel port to an IBM S/390 - zSeries host.