Cisco UCS 6400 Series Hardware Installation Manual page 49

Technical Specifications
Description
Transmit power
3
Approximate; actual distance may vary depending on fiber quality and other factors.
General Specifications for Cisco Fibre Channel SFP Transceivers
Short Wavelength
-9 to -2.5 dBM
Cisco UCS 6400 Series Fabric Interconnect Hardware Installation Guide
43