Abstract: A method and apparatus that prevents data corruption and power supply failure caused by device connection transition on an active SCSI bus is provided. A bus initiator pauses communication on the SCSI bus such that only communication by the bus initiator is allowed over the data communication bus. All other communication between peripheral devices attached to the data communication bus is paused. A shutdown signal from the bus initiator is transmitted over the data communication bus to a power controller, which eliminates power to a device slot corresponding to the received shutdown signal. After a connection transition of an electrical device in the device slot, a power reset signal is transmitted from the bus initiator over the data communication bus to the power controller, which then restores power to the device slot upon receiving the reset power signal.