Intel D845PEBT2 Specification Update - Page 13

Intel Desktop Board D845PEBT2 Specification Update SPECIFICATION CLARIFICATIONS The Specification Clarifications listed in this section apply to the Intel  Desktop Board D845PEBT2 Technical Product Specification (Order Number C153330). All Specification Clarifications will be incorporated into a future version of that specification. 1. Clarification of SMBus Routing Section 2.8.2.1 will change in its entirety as follows: 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 Or These Included (where xxx is any number) Manufacturing Options A99697-xxx 2-channel audio subsystem C10867-xxx C12587-xxx • 6-channel audio subsystem • IEEE 1394a-2000 subsystem • 6-channel audio subsystem • (No IEEE 1394a-2000 subsystem) Has SMBus Routed to This PCI Bus Connector 1 (ATX expansion slot 6) 1 (ATX expansion slot 6) 2 (ATX expansion slot 5) 7