Intel D845GBV Product Supplement Document for the Intel Desktop Board D845GBV - Page 14

Product Supplement Document for the Intel Desktop Board D845GBV # 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. 2.2.2 Internal I/O Connectors The internal I/O connectors are divided into the following functional groups: • Audio, power, and hardware control (see page 15)  Auxiliary line in  ATAPI CD-ROM  Front panel audio  Fans  ATX12V power  Main power • Add-in boards and peripheral interfaces (see page 19)  CNR (optional)  PCI bus  AGP  IDE  Diskette drive  SCSI LED 2.2.2.1 Expansion Slots The Desktop Board has the following expansion slots: • One AGP connector. The AGP connector is keyed for 1.5 V AGP cards only. Do not install a legacy 3.3 V AGP card. The AGP connector is not mechanically compatible with legacy 3.3 V AGP cards. • Three PCI rev 2.2 compliant local bus slots. The SMBus is routed to PCI bus connector 2. • One CNR (optional), shared with PCI bus connector 3 (ATX expansion slot 1). # INTEGRATOR'S NOTE This document references back-panel slot numbering with respect to processor location on the Desktop Board. The AGP slot is not numbered. PCI slots are identified as PCI slot #x, starting with the slot closest to the processor. The CNR slot shares an ATX expansion slot 3. 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 (PCI vs. AGP), but refers to an actual slot location on a chassis. Figure 4 on page 19 illustrates the Desktop Board's PCI slot numbering. 14