    AST RESEARCH, INC.        TECHNICAL BULLETIN # 1618          11/05/96

    TITLE:  Ascentia P or J Port Replicator

    ISSUE

       Port replicators are specifically designed as a convenient
       one-step connection to multiple desktop devices, and do not
       initiate a docking event within Windows 95. Our Port replicators
       meet specifications as outlined by Microsoft.

       This issue applies to all Ascentia J and P systems.

    BACKGROUND

       The port replicator signals to the system that it is attached by
       changing the active low replicator (pin 31) from a HIGH to LOW
       condition, when an optical sensor on the replicator is activated
       by locking the replicator in place.

       The DKING and DKINTR signals are not used by the replicator and
       will have no bearing on this configuration.

       The function of the replicator pin is to inform the power
       management circuit within the system, to take its supply from the
       replicator input. This pin also allows the circuit to switch the
       supply voltages to the replicator, once the unit has been locked
       into place.

    ACTION

       None required. The system is operating as designed.

    NOTES

       N/A

    TAN 000744SM

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