Location Of The Board's Aa Number; Smbus Routing - Intel D845PEBT2 Specification

2.8.2.1 Expansion Slots
The Desktop Board D845PEBT2 has the following expansion slots:
•
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.
•
CNR (optional).
•
Five PCI rev 2.2 compliant local bus slots: PCI add-in cards with SMBus support can access
sensor data and other information residing on the Desktop Board D845PEBT2. As shown in
the table below, the PCI bus connector to which SMBus is routed varies per board version.
The board version can be identified by the board's AA number (labeled on the board's front
right corner and shown in the figure at the bottom of the page) or by the manufacturing options
included on the board (listed in the table below).
Table 29.

SMBus Routing

A Board with This AA Number
(where xxx is any number)
A99697-xxx
C10867-xxx
C12587-xxx
✏
NOTE
This document references back-panel slot numbering with respect to processor location on the
Desktop Board D845PEBT2. The AGP slot is not numbered. PCI slots are identified as PCI slot
#x, starting with the slot closest to the processor. The ATX specification identifies expansion slot
locations with respect to the far edge of a full-sized ATX chassis. The ATX specification and the
Desktop Board D845PEBT2'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 61 illustrates the Desktop Board D845PEBT2's PCI
slot numbering.
The following figure shows the location of the board's AA number.
Or These Included Manufacturing
Options
2-channel audio subsystem
• 6-channel audio subsystem
• IEEE 1394a-2000 subsystem
• 6-channel audio subsystem
• (No IEEE 1394a-2000
subsystem)
Figure 12. Location of the Board's AA Number
Technical Reference
Has SMBus Routed to This PCI
Bus Connector
1 (ATX expansion slot 6)
1 (ATX expansion slot 6)
2 (ATX expansion slot 5)
OM15049
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