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17 PHP I/O Baseboard: Description/Setting

Configuration Jumpers

This chapter describes the PHP I/O baseboard and tells how to configure the jumpers.
Warnings and Cautions
Only a qualified service technician is authorized to remove the server covers and to access any
of the components inside the server. Before removing the covers, see “Safety Guidelines” on
page 115.

PHP Input/Output (I/O) Baseboard Features

The PHP I/O baseboard provides the primary I/O interface of the server. The baseboard also
interfaces with the CPU baseboard through the Midplane. The PHP I/O baseboard provides:
• three functionally independent PCI buses
32-bit primary PCI bus
32-bit secondary PCI bus
64-bit PCI bus
• integrated Symbios 53C896 Dual Channel LVDS controller
• integrated IDE controller that supports one IDE bus
• onboard video, serial, parallel, and universal serial bus (USB) ports
• user-accessible expansion slots
five 32-bit regular PCI bus slots
four 64-bit hot-plug PCI bus slots
one shared 16-bit ISA/32-bit PCI bus slot
• I2C server management interface