The SPFX/SC offers a multi-mode, option to extend your network up to 2 km with an SC connector type.
Documentation
Datasheet: SPSX/SC and SPFX/SC
Product information for the SPSX/SC and SPFX/SC Small Form-Factor Pluggable Modules.
SFP Compatibility
Instructions on how to use Allied Telesis SFPs with Cisco switches.