2  3  4	Unplanned - System Hardware Failure - I/O Board
Description	Events (normally failures) caused by SBus, PCI, or cPCI cards.
Attention	This does not include events caused by the following: Boards that can contain CPU modules, even if a board also contains I/O slots for SBus, PCI, or cPCI cards Boards that can contain only SBus, PCI, or cPCI cards Boards for the power subsystem (such as the Power Distribution Board) Any network hardware outside of the system
See also	System Hardware I/O Board Upgrade/Maint.
Notes	The Unplanned - System Hardware Failure category contains cause codes for CPU System Boards, I/O Boards, and System Interface Boards. Use these three cause codes according to the following rules: If a CPU is on or can be inserted onto the board, use Unplanned - System Hardware Failure - CPU System Board for unplanned events, even if the board also contains SBus, PCI, or cPCI slots If the board contains only SBus, PCI, or cPCI slots, use Unplanned - System Hardware Failure - System Interface Board for unplanned events for the board All unplanned events for SBus, PCI, or cPCI cards are assigned to Unplanned - System Hardware Failure - I/O Board