NOTE ON NEW MODEL
We tested all of the scripts outlined in the document Automating X4SD USB 2.0 SD Card Reader Four (4) Slot Operations with the new 4SDHUB USB 2.0 Four (4x) Slot SD Card Reader with 3 Port Hub model, and everything worked fine. To all intents and purposes, it is a direct replacement for the previous model.
Source: synchrotech.com