HP Array Controller HSG V8.7 Software - Manual (Page 188)

Installing EMU Microcode
C–6 UltraSCSI RAID Enclosure
Restarting the Controller
Complete the procedure in Table C–5 to restart the controller after the
microcode upgrade is loaded.
Table C–5 Restarting the Controller
1. Remove the 8-pin RJ45 connector from the EMU UART connector.
2. On each controller, press and hold-in the reset button and reseat its
PCMCIA card.
3. Release the reset button.
4. Verify that each array controller reinitializes.