What is the Cisco X2-10GB-SR?
The Cisco X2-10GB-SR is an optical transceiver, listed by the manufacturer as "SHORT RANGE TRANSCEIVER MODULE". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
The Cisco X2-10GB-SR is an optical transceiver — originally specified as "SHORT RANGE TRANSCEIVER MODULE" — available refurbished or as surplus stock via Circular Telecom, supporting network operators sourcing decommissioned and reclaimed equipment.
Common Questions
The Cisco X2-10GB-SR is an optical transceiver, listed by the manufacturer as "SHORT RANGE TRANSCEIVER MODULE". 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 X2-10GB-SR, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue