Teledyne LabMaster 10 Zi Series Operator's Manual page 30

Acquisition Module is connected from the CHANNEL 1-4 output,
second from the CHANNEL 5-8 output, third from the CHANNEL
9-12 output, etc.

If you are connecting less than 5 of the Acquisition Modules, the
PCIe 1 Lane Channel Sync Outputs on the back of the Master
Control Module may not be skipped and must be connected in
consecutive order into the PCIe 1 Lane Channel Sync Inputs on
the back of the corresponding acquisition modules.

Pull gently on the green pull tab on the cable plug for removal.
LM10Zi-GSM-E Rev A
Getting Started Guide
23