Abstract: Techniques to generate local configuration data of a connection of local end of a cable to a SAS expander, store the data to a memory of the expander, then send a request to a local module at the local end of the cable to store the data to a memory at the local end of the cable, and send a request to a SAS device connected to a remote end of the cable to store the data at a memory located at the remote end of the cable. In response to a disconnection and reconnection of the local end of the cable with the expander, send a request to the local module to retrieve the data. If the retrieved data is different than the stored data, then generate a signal to alert of a misconfiguration between the local end of the cable and the expander.