Abstract: Systems and methods are disclosed for providing an indication of the data transfer protocol that is operative during a data transfer operation between a data storage device capable of supporting a plurality of data transfer protocols and a host computer. A protocol controller of the data storage device is configured to determine a data transfer protocol based on a data cable used and to generate a selector signal used to provide the indication.

Abstract: The present invention relates to a fault diagnosis and intelligent warning method for monitoring a system device, including the following steps: step 1. establishing independent alarm analysis logic and independent recovery analysis logic based on a fault model of each alarm; step 2. controlling the alarm logic and the recovery logic to be mutually exclusively executed; the step 3. performing delay processing on an alarm event and a recovery event; and step 4. establishing a cascading relationship between alarm events generated after the delay processing: establishing an alarm cascading group based on a relationship between different alarm events, automatically determining, by using generation of an alarm event as a triggering condition, whether alarms in a same cascading group simultaneously exist within a time, and generating association information between alarm events.