This is a single-slot SFP dongle for use with ProTune(TM) offline tuning application. It supports the tuning of SFP and SFP+ tunable DWDM transceivers. The SFP Tuning Dongle interfaces with standard USB-A ports and ships with a USB-A to USB-C conversion cable. The SFP Tuning Dongle is compatible with Windows and Android environments.