EXFO America Inc. AXS-880 Software upgrade: AXS-855 to AXS-855-1 AXS-855-DS1-DS3 to AXS-855-1-DS1-DS3 AXS-855-E1 to AXS-855-1-E1 AXS-855-E1-DS3 to AXS-855-1-E1-DS3 Enables support for: 1000Base-T electrical interface and GigE optical interfaceIncludes: Software key.MUST order one