SEA-B123's 8-pin spliiter is designed for additional cameras.
(One sided female input for AC Power Adapter/Not like original included splitter).
If you need to replace your original splitter with SEA-B234, you can replace it with this method:
1. Connect your original power ac adapter to your DVR directly without original spliiter.
2. Connect your SEA-B123 ac adapter with 8-pin splitter to power outlet.
3. Connect 8-pin spliiter with BNC (power/female) cable that comes from camera unit.