What is the Cisco 20-1GE-FLEX?
The Cisco 20-1GE-FLEX is a network/telecom equipment component, listed by the manufacturer as "FLEXIBLE INTERFACE MOD". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

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Part Overview
The Cisco 20-1GE-FLEX is a network/telecom equipment component — originally specified as "FLEXIBLE INTERFACE MOD" — available refurbished or as surplus stock via Circular Telecom, supporting network operators sourcing decommissioned and reclaimed equipment.
Common Questions
The Cisco 20-1GE-FLEX is a network/telecom equipment component, listed by the manufacturer as "FLEXIBLE INTERFACE MOD". 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 20-1GE-FLEX, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue