HP Engage Go 13.5 Maintenance and Service Guide - Page 22

Configuring the I/O connectivity base powered serial ports

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4. Connect the AC adapter to the I/O connectivity base and a grounded AC outlet. See Connecting an AC adapter to power on page 7. Configuring the I/O connectivity base powered serial ports You can configure the serial ports as standard (unpowered) serial ports or powered serial ports. Some devices use a powered serial port. If the serial port is configured as a powered port, devices that support a powered serial interface do not require an external power source. IMPORTANT: The system must be turned off before connecting or disconnecting serial port devices. NOTE: The I/O connectivity base ships with all serial ports configured in standard unpowered serial mode (0 volts) by default. Each serial port has three voltage settings. ● 0 volts ● 5 volts ● 12 volts To change the voltage settings for a powered serial port: 1. Turn off the mobile system properly through the operating system, and turn off any external devices. 2. Disconnect the power cord. NOTE: Regardless of the power 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 and wait approximately 30 seconds for the power to drain to avoid damage to the internal components of the computer. 3. Remove the five screws on the underside of the I/O connectivity base (1) that secure the bottom plate to the I/O connectivity base, and then remove the bottom plate from the I/O connectivity base (2). Configuring the I/O connectivity base powered serial ports 15

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4.
Connect the AC adapter to the I/O connectivity base and a grounded AC outlet. See
Connecting an
AC adapter to power
on page
7
.
Configuring the I/O connectivity base powered serial ports
You can configure the serial ports as standard (unpowered) serial ports or powered serial ports. Some
devices use a powered serial port. If the serial port is configured as a powered port, devices that
support a powered serial interface do not require an external power source.
IMPORTANT:
The system must be turned off before connecting or disconnecting serial port devices.
NOTE:
The I/O connectivity base ships with all serial ports configured in standard unpowered serial
mode (0 volts) by default.
Each serial port has three voltage settings.
●
0 volts
●
5 volts
●
12 volts
To change the voltage settings for a powered serial port:
1.
Turn off the mobile system properly through the operating system, and turn off any external
devices.
2.
Disconnect the power cord.
NOTE:
Regardless of the power 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 and wait
approximately 30 seconds for the power to drain to avoid damage to the internal components of
the computer.
3.
Remove the five screws on the underside of the I/O connectivity base
(1)
that secure the bottom
plate to the I/O connectivity base, and then remove the bottom plate from the I/O connectivity base
(2)
.
Configuring the I/O connectivity base powered serial ports
15