What is the Cisco SM-ES3G-16-P?
The Cisco SM-ES3G-16-P is a circuit card / line card, listed by the manufacturer as "ENHANCED ETHERNET CARD". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
Manufactured by Cisco, the SM-ES3G-16-P (ENHANCED ETHERNET CARD) is a circuit card / line card. Circular Telecom sources, tests, and resells surplus and refurbished Cisco equipment like this as part of a lower-carbon alternative to new procurement.
Common Questions
The Cisco SM-ES3G-16-P is a circuit card / line card, listed by the manufacturer as "ENHANCED ETHERNET 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 SM-ES3G-16-P, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue