Intel D845PT Product Specification - Page 58

Internal I/O Connectors

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Intel Desktop Board D845BG/D845PT Technical Product Specification 2.8.2 Internal I/O Connectors The internal I/O connectors are divided into the following functional groups: • Audio (see page 59)  Auxiliary line in  ATAPI CD-ROM • Power and hardware control (see page 61)  Fans (three)  ATX12V  Main power • Add-in boards and peripheral interfaces (see page 64)  CNR (communication and networking riser)  PCI bus (six on the D845BG board; three on the D845PT board)  AGP  IDE (two)  Diskette drive  SCSI LED 2.8.2.1 Expansion Slots The 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. • PCI rev 2.2 compliant local bus slots (six on the D845BG board, three on the D845PT board). The SMBus is routed to PCI bus connector 1 only (ATX expansion slot 6). PCI add-in cards with SMBus support can access sensor data and other information residing on the board. • One CNR (optional), shared with PCI bus connector 3 (ATX expansion slot 1) on the D845PT board or with PCI bus connector 6 (ATX expansion slot 1) on the D845BG board. ✏ NOTE This document references back-panel slot numbering with respect to processor location on the 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 6 on the D845BG board and slot 3 on the D845PT. 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 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 14 on page 64 illustrates the board's PCI slot numbering. 58

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Intel Desktop Board D845BG/D845PT Technical Product Specification
58
2.8.2
Internal I/O Connectors
The internal I/O connectors are divided into the following functional groups:
•
Audio (see page 59)
Auxiliary line in
ATAPI CD-ROM
•
Power and hardware control (see page 61)
Fans (three)
ATX12V
Main power
•
Add-in boards and peripheral interfaces (see page 64)
CNR (communication and networking riser)
PCI bus (six on the D845BG board; three on the D845PT board)
AGP
IDE (two)
Diskette drive
SCSI LED
2.8.2.1
Expansion Slots
The 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.
•
PCI rev 2.2 compliant local bus slots (six on the D845BG board, three on the D845PT board).
The SMBus is routed to PCI bus connector 1 only (ATX expansion slot 6)
.
PCI add-in cards
with SMBus support can access sensor data and other information residing on the board.
•
One CNR (optional), shared with PCI bus connector 3 (ATX expansion slot 1) on the D845PT
board or with PCI bus connector 6 (ATX expansion slot 1) on the D845BG board
.
✏
NOTE
This document references back-panel slot numbering with respect to processor location on the
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 6 on the D845BG board
and slot 3 on the D845PT.
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 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 14 on page 64 illustrates the board
’
s PCI slot numbering.