Datasheet

Technical Reference

INTEGRATOR’S NOTE

The back panel audio line out connector is designed to power headphones or amplified speakers

only. Poor audio quality occurs if passive (non-amplified) speakers are connected to this output.

2.8.2 Internal I/O Connectors

The internal I/O connectors are divided into the following functional groups:

• Audio, power, and hardware control (see page 50)

 Front panel audio

 Auxiliary line in

 ATAPI CD-ROM

 Fans (3)

 ATX12V power

 Main power

 Chassis intrusion

• Add-in boards and peripheral interfaces (see page 53)

 PCI bus

 IDE

 Diskette drive

2.8.2.1 Expansion Slots

The Desktop Board has three PCI rev 2.2 compliant local bus slots. The SMBus is routed to PCI

bus connector 2.

INTEGRATOR’S NOTE

This document references back-panel slot numbering with respect to processor location on the

Desktop Board. PCI slots are identified as PCI slot #x, starting with the slot closest to the

processor. The ATX/microATX specifications identify expansion slot locations with respect to the

far edge of a full-sized ATX chassis. The ATX specification and the Desktop Board’s silkscreen

are opposite and could cause confusion. The ATX numbering convention is made without respect

to slot type, but refers to an actual slot location on a chassis. Figure 6 on page 53 illustrates the

Desktop Board’s PCI slot numbering.