Pci Configuration - Compaq AlphaServer ES45 1B Owner's Manual

4.11 PCI Configuration

This section describes the Model 1B six-slot (one slot AGP), Model 2B
ten-slot, and Model 3B legacy ten-slot PCI I/O backplanes.
PCI modules are either designed specifically for 5.0 volts or 3.3 volts, or are uni-
versal in design and can plug into either 3.3 or 5.0 volt slots.
CAUTION: PCI modules designed specifically for 5.0 volts or 3.3 volts are keyed
differently. Check the keying before you install the PCI module and
do not force it in. Plugging a module into a wrong slot can damage
it.
Configuring and Installing Components 4-31