DY-5546S - DYMEC SERIAL LINK / Redundant Fiber Ring Serial Link / Single-mode
DY-5545M - DYMEC SERIAL LINK / Redundant Fiber Ring Serial Link / Multimode
DY-5844S - DYMEC SERIAL LINK (Singlemode)
DY-5844M - DYMEC SERIAL LINK (Multimode)
DY-5877M - DYMEC SERIAL LINK (Multimode)
DY-5877S - DYMEC SERIAL LINK (Singlemode)
DY-5977M - DYMEC SERIAL LINK / 4 Channel / Multimode