1x Speedlink Interface Box (Model: 15861300 / Serial: 1581053461). 1x Speedlink User Guide. Software: Works with ReSound Smart Fit and Aventa fitting software. Supported Devices: Compatible with wired ReSound hearing aid families (including Linx, Enzo, One, Omnia, Key, and legacy BTE/RIE models) requiring a cabled setup or firmware override.
