SCSI-1, SCSI-2, SCSI-3 wide & Ultra wide are considered single ended drives.
LVD 80 Ultra2, LVD 160 Ultra3, and LVD 320 Ultra 4 are LVD drives.
Multimode LVD terminators can be used on a SCSI bus that contains LVD & single ended drives.
Singlemode LVD terminators can only be used on the specific LVD SCSI bus.