ADLINK PXIe-3975 - Manual (Page 28)

16 Getting Started
2.3.9 ExpressCard/34
The PXIe-3975 controller is equipped with an ExpressCard/34 slot
on the front panel, which provides I/O expansion. ExpressCard
connector signals are as follows.
Pin Signal Description Pin Signal Description
1 GND Ground 14 +3.3V Power
2 USBD- USB Data - 15 +3.3V Power
3 USBD+ USB Data + 16 CLKREQ# Clock Request
4 CPUSB# USB Presence 17 CPPE# PE Presence
5 RESERVED Reserved for
future use
18 REFCLK- Reference
Clock-
6 RESERVED Reserved for
future use
19 REFCLK+ Reference
Clock+
7 SMBCLK SMBus Clock 20 GND Ground
8 SMBDATA SMBus Data 21 PERn0 PE Data
Receive -
9 +1.5V Power 22 PERp0 PE Data
Receive +
10 +1.5V Power 23 GND Ground
11 WAKE# PE Wake 24 PETn0 PE Data
Transmit -
12 +3,3VAUX Power 25 PETp0 PE Data
Transmit +
13 PERST# PE Reset 26 GND Ground