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Technical Reference

2.2.2.2 Add-in Card Connector

Note the following considerations for the PCI Conventional bus connector:

• The PCI Conventional bus connector is bus master capable.

• SMBus signals are routed to the PCI Conventional bus connector. This enables PCI

Conventional bus add-in boards with SMBus support to access sensor data on the

board. The specific SMBus signals are as follows:

⎯ The SMBus clock line is connected to pin A40.

⎯ The SMBus data line is connected to pin A41.

The PCI Conventional bus connector also supports single-slot and dual-slot riser cards

for use of up to two bus master PCI expansion cards. In order to support two PCI bus

master expansion cards, the riser card must support the following PCI signal routing:

• Pin A11: additional 33 MHz PCI clock

• Pin B10: additional PCI Request signal (i.e., PREQ#2)

• Pin B14: additional PCI Grant signal (i.e., GNT#2)

2.2.2.3 Power Supply Connector

The board has a 2 x 12 power connector (see Table 20). This board requires a TFX12V

or SFX12V power supply.

Table 20. Power Connector

Pin Signal Name Pin Signal Name

1 +3.3 V 13 +3.3 V

2 +3.3 V 14 -12 V

3 Ground 15 Ground

4 +5 V 16 PS-ON# (power supply remote on/off)

5 Ground 17 Ground

6 +5 V 18 Ground

7 Ground 19 Ground

8 PWRGD (Power Good) 20 No connect

9 +5 V (Standby) 21 +5 V

10 +12 V 22 +5 V

11 +12 V 23 +5 V

12 No connect 24 Ground

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