When you use an NI 6031E, NI 6033E or NI 6071E with an SH100-68-68 cable, the I/O signals appear on two 68-pin connectors, shown below.
When you use an NI 6025E with an SH100-68-68 cable, the I/O signals appear on two 68-pin connectors, shown below.
This information is also available in the E Series User Manual.