HP StorageWorks A6826A Installation Manual page 21

Some motherboards have two kinds of PCI bus slots: master and slave. The
AB68A6A must be in a PCI bus master slot. (Some motherboards have PCI bus
master slots that are shared with onboard devices. The AB68A6A does not work
in shared slots.)
PCI connectors vary among system adapter manufacturers. The AB68A6A is a
64-bit PCI device that can function in a 32-bit PCI slot; the slot conforms to the
PCI specification. The rear edge of the PCI slot is notched.
PCI and PCI-X slots look the same. If the server contains both PCI and PCI-X
slots, refer to the server manufacturer's instructions to determine the slot type.
The AB68A6A is designed and tested to operate at PCI bus speeds of up to
133 MHz.
A6826A PCI-X Host Bus Adapter for Linux 64-bit Systems Installation Guide
Caution:
If you try to install the adapter in a PCI slot that does not
conform to the PCI specification, you may damage the device.
Installing the Adapter
21