What is the Cisco GLC-FE-100EX?
The Cisco GLC-FE-100EX is a SFP optical transceiver module, listed by the manufacturer as "100BASE-EX SFP (40km)". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
The Cisco GLC-FE-100EX is a SFP optical transceiver module — originally specified as "100BASE-EX SFP (40km)" — available refurbished or as surplus stock via Circular Telecom, supporting network operators sourcing decommissioned and reclaimed equipment.
Common Questions
The Cisco GLC-FE-100EX is a SFP optical transceiver module, listed by the manufacturer as "100BASE-EX SFP (40km)". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
Circular Telecom sources and resells surplus and refurbished Cisco network equipment, including parts such as the GLC-FE-100EX, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue