StarTech.com OAM Managed Gigabit Ethernet Fiber Media Converter MM LC 550m

Cisco GLC-LH-SMD Comp. SFP - 1GbE SMF Transceiver - 20km

StarTech.com Part# SFPG1320C

Transceivers/Media Converters – SFP (mini-GBIC) - 1.25 Gigabit Ethernet Ethernet Technology - Optical Fiber - 1 Total Number of Ports - Hot-pluggable - Hot-swappable - 1000Base-LH Network Technology - Single-mode - China - 0.4" ...

Cisco SFP-GE-S Compatible SFP - 1GbE MMF Transceiver - 2km

StarTech.com Part# SFPGESST

Transceivers/Media Converters – SFP (mini-GBIC) - 1.25 Gigabit Ethernet Ethernet Technology - Optical Fiber - 1 Total Number of Ports - Hot-pluggable - Hot-swappable - 1000Base-SX Network Technology - Multi-mode - China - 0.4" Height