What is the Cisco ESR-HH-1GE?
The Cisco ESR-HH-1GE is a circuit card / line card, listed by the manufacturer as "1-port Gigabit Ethernet half-height line card". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
Cisco ESR-HH-1GE: a circuit card / line card (1-port Gigabit Ethernet half-height line card). Circular Telecom resells surplus and refurbished units of parts like this, helping operators extend network equipment lifecycles and reduce e-waste.
Common Questions
The Cisco ESR-HH-1GE is a circuit card / line card, listed by the manufacturer as "1-port Gigabit Ethernet half-height line card". 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 ESR-HH-1GE, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue