Table 2-1 Riser Card Configurations
No. Expansion Slots
1PCI Express x1 Expansion Card slot
2PCI Expansion Card slot
3Powered Serial Port Expansion Card slot
NOTE: Although there are two slots in each riser card, you can only install one expansion card in the riser card.
The bottom slot on each card (3) is designed specifically for an HP Powered Serial Port expansion card. DO NOT attempt to plug any other type of card into the bottom slot.
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. If your computer is not configured with a powered serial port expansion card, you may purchase one from HP.
Figure 2-9 Powered Serial Ports
Table
Item | Description | Supports |
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| +5V | +12V |
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1 | COM 1 | Yes | Yes |
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2 | COM 2 | Yes | Yes |
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3 | COM 3 (optional) | Yes | Yes |
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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 16 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.
Installing an Expansion Card 13