2.6, 2.8 UCS17, UCS55 / 1989 - 1993
2.8 UCS55, 3.0 UES73, 3.1 UCS69 / 1993 - 2001
3.2 UER25, UES25 (Disc / Disc) / 1998 - 2005
3.2 UER25, UES25 (Disc / Drum) / 1998 - 2005