SBC86840 Series All-In-One Mini ITX Board User’s Manual
Jumpers and Connectors
40
2.4.25 PCI-EXPRESS x4 Expansion Slot: PCIE2
This PCI-Express x4
Expansion Slot
(PCIE2)
supports 3 PCI-Express
x1 graphics interface throught riser card.
Pin
Description
Pin
Description
Pin
Description
Pin
Description
A1 N.C
A2 +12V
B1
+12V
B2 +12V
A3 +12V
A4 GND
B3
+12V
B4 GND
A5
N.C A6
N.C B5
SMCLK
B6
SMDAT
A7
N.C A8
N.C B7
GND B8
+3.3V
A9 +3.3V
A10 +3.3V
B9
N.C
B10
3.3VAUX
A11 RESET#
A12 GND
B11
WAKE#
B12
N.C
A13 P
A14 PCIE_CLK-
B13
GND
B14
PEG_TXP0
A15 GND
A16 PEG_RXP0
B15
PEG_TXN0
B16
GND
A17 PEG_RXN0
A18 GND
B17
N.C
B18
GND
End of the x1 Connector
A19 N.C
A20 GND
B19
PC
B20
PCIE_CLK2-
A21 PC A22 PCIE_CLK3-
B21
GND
B22
GND
A23
GND A24
GND B23
PEG_TXP2
B24
PEG_TXN2
A25 PEG_RXP2
A26 PEG_RXN2
B25
GND
B26
GND
A27
GND A28
GND B27
PEG_TXP3
B28
PEG_TXN3
A29 PEG_RXP3
A30 PEG_RXN3
B29
GND
B30
N.C
A31 GND
A32 N.C
B31
N.C
B32
N.C
PCIE2
Please be noted the PCIe x4 slot is compliant with PICMG v1.3
standard that you directly insert one PCIe x1, or three PCIe x1
through riser card for expansion. This slot does not support
regular PCIe x4 add-on card.
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