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Expansion Slots
Mini PCIe
EXC Slot
The EXC interface is used to install an EXC card for I/O expansion.
Mini PCI Express Slot
The Mini PCI Express slot on the system board is used to install one half and/or full size Mini
PCIe card such as network cards or other cards that comply to the mini PCI Express specifica-
tions into the mini PCI Express slot.
DFI Proprietary Extension Bus
The DFI Proprietary Extension Bus gold finger is used for customized expansion (PCI or Mini
PCIe) via a riser card.
Chapter 5 Ports and Connectors
DFI Proprietary
Extension Bus
EXC
Chapter 5
Pins
Pin Assignment
GND
A1
+12V
A2
+12V
A3
GND
A4
+5V
A5
+5V
A6
+5V
A7
+5V
A8
+3V3
A9
+3V3
A10
RESET-
A11
GND
A12
CLK+
A13
CLK-
A14
GND
A15
RX+
A16
RX-
A17
GND
A18
51
DFI Proprietary Extension Bus
Pins
Pin Assignment
+12V
B1
+12V
B2
+12V
B3
GND
B4
SMB_CLK
B5
SMB_DATA
B6
GND
B7
+3V3
B8
NC
B9
+3VDU
B10
PCIE_WAKE-
B11
PME-
B12
GND
B13
TX+
B14
TX-
B15
GND
B16
NC
B17
GND
B18
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