HP Rp5700 Hardware Reference Guide - HP rp5700 - Page 54

Powered Serial Ports, Appendix C

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Item 1 2 Port Name COM 4 COM 3 To configure power to the serial ports: 1. Remove/disengage any security devices that prohibit opening the computer. 2. Remove all removable media, such as compact discs, from the computer. 3. Turn off the computer properly through the operating system, then turn off any external devices. 4. Disconnect the power cord from the power outlet and disconnect any external devices. CAUTION: Regardless of the power-on state, voltage is always present on the system board as long as the system is plugged into an active AC outlet. You must disconnect the power cord to avoid damage to the internal components of the computer. 5. If the computer is on a stand, remove the computer from the stand. 6. Remove the computer cover. 48 Appendix C Powered Serial Ports ENWW

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Item
Port Name
1
COM 4
2
COM 3
To configure power to the serial ports:
1.
Remove/disengage any security devices that prohibit opening the computer.
2.
Remove all removable media, such as compact discs, from the computer.
3.
Turn off the computer properly through the operating system, then turn off any external devices.
4.
Disconnect the power cord from the power outlet and disconnect any external devices.
CAUTION:
Regardless of the power-on state, voltage is always present on the system board as
long as the system is plugged into an active AC outlet. You must disconnect the power cord to
avoid damage to the internal components of the computer.
5.
If the computer is on a stand, remove the computer from the stand.
6.
Remove the computer cover.
48
Appendix C
Powered Serial Ports
ENWW