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Cisco MDS 9148S Multilayer Switch Hardware Installation Guide
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Chapter 1      Product Overview
    Supported SFP+ Transceivers
Note Use only Cisco SFP transceivers on the Cisco MDS 9148S switches. Each Cisco SFP transceiver is 
encoded with model information that enables the switch to verify that the SFP transceiver meets the 
requirements for the switch.