Hardware Reference Manual

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. Remove/disengage any security devices that prohibit opening the computer.
2. Remove all removable media, such as USB flash drives, 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. Remove the computer access panel.
6. Push outward on the tab located on the back of the expansion card retention latch inside the
chassis (1) and rotate the latch open (2).
Figure 2-10 Opening the Slot Cover Retention Latch
14 Chapter 2 Hardware Upgrades