S-50C528DR S50-C90X S-50C-A-3.2-DG S-50C-A-4.3-DG S-50C-A-5.6-DG S-50C-B-3.2-DG-S S-50C-B-4.3-DG-S S-50C-B-5.6-DG-S S-50C-C-4.3-DG S-50C-C-5.6-DG