Model Name : C9200-NM-2Q
Brand : Cisco
Key Features
It adds 2× 40G uplink ports to Cisco Catalyst 9200 switches for high-speed aggregation.
Yes, it can be installed or replaced without powering down the switch.
It supports Cisco QSFP+ 40G transceivers.
Yes, it works with both Cisco Catalyst 9200 and 9200L series.
You need it if you require higher uplink bandwidth (40G) beyond the default switch uplink capacity.