MITX-V1K0 Series - User Guide, Rev. 1.0
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7.18.
PCI Express x4 Slot (PCIE1)
The MITX-V1K0 Series supports PCI Express x4 via slot PCIE1 which supports PCIe x2 signal only.
The PCIe x4 slot (PCIE1) shares the same PCIe x2 signals with the M.2 Key B socket (M2B1). The default assembly
configuration is the M.2 Key B socket M2B1.
Figure 35: PCIe x4 Slot Connector PCIE1
Table 42: Pin Assignment PCIE1
Pin
Side B
Side A
Signal
Description
Signal
Description
1
+12V
+12 V power
PRSNT1#
Hot plug presence detect
2
+12V
+12 V power
+12V
+12 V power
3
NC
+12V
+12 V power
4
Ground
Ground
5
SMB_CLK
SMBus clock
NC
6
SMB_DAT
SMBus data
NC
7
Ground
NC
8
+3.3V
+3.3 V power
NC
9
NC
+3.3V
+3.3 V power
10
+3.3VSB
+3.3 V standby power
+3.3V
+3.3 V power
11
WAKE#
Link reactivation
RST#
PCI Express reser
Mechanical Key
12
NC
Ground
13
Ground
Reference clock differential pair (+)
14
PETX0+
Lane 0 transmitter differential pair (+) REFCLK-
Reference clock differential pair (-)
