Hi
that sfp is supported on that model but you will need an additional license with that sup for SVL , see below points and doc worth reading before enabling
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9400/software/release/16-9/configuration_guide/ha/b_169_ha_9400_cg/configuring_cisco_stackwise_virtual.htmlsee the below points and doc
Prerequisites for Cisco StackWise Virtual
All the switches in a Cisco StackWise Virtual solution must be of the same switch model.
All the switches in a Cisco StackWise Virtual solution must be running the same license level.
All the switches in a Cisco StackWise Virtual solution must be running the same software version.
The supervisor module in each switch should be inserted in symmetrical slots. For example, in a Cisco Catalyst 9407R Switch, if you have installed the supervisor module in slot 3, ensure that the second switch also has the supervisor module installed in slot 3.
For chassis slot restrictions, refer to the Cisco Catalyst 9400 Series Supervisor Module Installation Note.
Note
When you enable Cisco StackWise Virtual on the device:
Layer 2, Layer 3, Security, Quality of Service, Multicast, Application, Monitoring and Management, Multiprotocol Label Switching, and High Availability are supported. Contact the Cisco Technical Support Centre for the specific list of features that are supported under each one of these technologies.
Resilient Ethernet Protocol, Remote Switched Port Analyzer, and Sofware-Defined Access are NOT supported.
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Restrictions for Cisco StackWise Virtual
Cisco StackWise Virtual is supported only on Cisco Catalyst 9404R and Cisco Catalyst 9407R switches.
Cisco StackWise Virtual is supported on Cisco Catalyst 9400 Series Supervisor 1 Module (C9400-SUP-1) and Cisco Catalyst 9400 Series Supervisor 1XL Module (C9400-SUP-1XL). The feature requires a special, additional, C9400-SUP-UPG-LIC= license with Cisco Catalyst 9400 Series Supervisor 1 Module (C9400-SUP-1).
StackWise Virtual Link (SVL) connections are established only through 10G or 40G uplink ports on the supervisor module. You cannot establish an SVL using a 10G port on one switch and a 40G port on the other switch.
Cisco StackWise Virtual can be configured only on one supervisor module per chassis. You can install two supervisor modules in each chassis used in the Cisco StackWise Virtual solution. However, only one of the supervisor modules will be active; the other module will be powered off.
The Federal Information Processing Standards (FIPS) is not supported on SVL.
When deploying Cisco StackWise Virtual, ensure that VLAN ID 4094 is not used anywhere on the network. All inter-chassis system control communication between stack members is carried over the reserved VLAN ID 4094 from the global range.
Dual-active detection (DAD) and StackWise Virtual (SVL) link configuration must be performed manually and the device should be rebooted for the configuration changes to take effect.
Fast Hello dual-active detection is supported only on supervisor module ports. Enhanced PAgP dual-active detection is supported on supervisor module ports and line cards.
Only Cisco Transceiver Modules are supported.
The interface VLAN MAC address that is assigned by default, can be overridden using the mac-address command. If this command is configured on a single SVI or router port that requires Layer 3 injected packets, all other SVIs or routed ports on the device also must be configured with the same first four most significant bytes (4MSB) of the MAC address. For example, if you set the MAC address of any SVI to xxxx.yyyy.zzzz, set the MAC address of all other SVIs to start with xxxx.yyyy. If Layer 3 injected packets are not used, this restriction does not apply.
