SoClean did not forget about the Transcend and Human Design Medical CPAP users. You(the user) are valued and SoClean wants to make sure your travel device is just as clean as your home device. This SoClean adapter is made for the Transcend and HDM Z1 CPAPs. Did we mention that it is compatible to SoClean/SoClean II/SoClean 2 Go? Ding ding ding ding we have a winner!