IBM 7979B1U User Manual page 55

Note: If you have replaced the PCI Express riser-card assembly with the
optional PCI-X riser-card assembly, slots 1 and 2 are non-hot-plug, 64-bit,
133-MHz PCI-X slots, which support Integrated xSeries Adapter (IXA)
single-width adapters.
v The system scans devices in the following order, if you have not changed the
default boot precedence: integrated Ethernet controllers, integrated SAS
controller, and then PCI slots 1, 2, 3, and 4.
PCI riser card
The following illustration shows the location of the adapter expansion slots on the
PCI riser card.
Note: For clarity, the riser-card assembly is inverted in the illustration.
To install an adapter, complete the following steps:
1. Read the safety information that begins on page vii and "Installation guidelines"
on page 28.
2. Turn off the server and peripheral devices and disconnect all power cords and
external cables (see "Turning off the server" on page 13).
Attention: In a dc power environment, only trained service personnel other
than IBM service technicians are authorized to connect or disconnect power to
the dc power supply. See the documentation that comes with each dc power
supply.
3. Remove the cover (see "Removing the cover" on page 31).
4. Determine which expansion slot you will use for the adapter.
5. If you are installing an adapter in PCI slot 1 or 2, remove the PCI riser-card
assembly (see "Removing the riser-card assembly" on page 32).
PCI adapter
connectors
Chapter 2. Installing optional devices
39