HP RP3 Maintenance & Service Guide HP RP3 Retail System Model 3100 - Page 30

Installing an Optional Powered Serial Port Expansion Card

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Installing an Optional Powered Serial Port Expansion Card Two powered serial ports, COM 1 and COM 2, are standard on the computer. Some models have a powered serial port expansion card installed that supplies two additional powered serial ports, COM 3 and COM 4. Item Description Supports +5V +12V 1 COM 1 Yes Yes 2 COM 2 Yes Yes 3 COM 3 (optional) Yes Yes 4 COM 4 (optional) Yes Yes NOTE: The powered serial ports are configured for power in the Computer Setup utility. Refer to Configuring Powered Serial Ports on page 25 for more information. CAUTION: Be careful when connecting peripheral devices to powered 5V and 12V serial ports. The peripheral device must require the same voltage for which the powered serial port is configured. Connecting a peripheral device that is not rated for the same voltage supplied by the powered serial port can damage the computer and the peripheral device. If the powered serial ports have been configured for power from the factory, they will be covered by protective plastic caps. Turn off the computer and remove the caps before connecting powered serial devices. To install a Powered Serial Port expansion card: NOTE: The following procedure provides instructions for installing a Powered Serial Port expansion card. However, the procedure is basically the same for installing any full-height PCI expansion card or PC Express x1 expansion card. 1. Prepare the computer for disassembly (Preparation for Disassembly on page 15). 2. Remove the access panel (Access Panel on page 16). Expansion Cards 23

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Installing an Optional Powered Serial Port Expansion Card
Two powered serial ports, COM 1 and COM 2, are standard on the computer. Some models have a
powered serial port expansion card installed that supplies two additional powered serial ports, COM 3
and COM 4.
Item
Description
Supports
+5V
+12V
1
COM 1
Yes
Yes
2
COM 2
Yes
Yes
3
COM 3 (optional)
Yes
Yes
4
COM 4 (optional)
Yes
Yes
NOTE:
The powered serial ports are configured for power in the
Computer Setup utility. Refer to
Configuring Powered Serial Ports
on page
25
for more information.
CAUTION:
Be careful when connecting peripheral devices to powered 5V and 12V serial ports. The
peripheral device must require the same voltage for which the powered serial port is configured.
Connecting a peripheral device that is not rated for the same voltage supplied by the powered serial
port can damage the computer and the peripheral device.
If the powered serial ports have been configured for power from the factory, they will be covered by
protective plastic caps. Turn off the computer and remove the caps before connecting powered serial
devices.
To install a Powered Serial Port expansion card:
NOTE:
The following procedure provides instructions for installing a Powered Serial Port expansion
card. However, the procedure is basically the same for installing any full-height PCI expansion card or
PC Express x1 expansion card.
1.
Prepare the computer for disassembly (
Preparation for Disassembly
on page
15
).
2.
Remove the access panel (
Access Panel
on page
16
).
Expansion Cards
23