Note:
1. Currently @-Witness DVR boards are not compatible with VIA-series and ATI-series chipset Motherboards. 
2. The CP-3160RD DVR board allows plugging CP-1605DC Daughter Cards (The combination card calls CP-3320RD) on a PC to reach 32 video and 16 audio input.
3. The CP-3320DX DVR card can only be inserted into the PCI Bus x1 slot only.
4. This card only works when it connects to PC's power.
5. To install CP-3320RD cards, ensure the PC power supply is 400 Watts or above.
6. In a computer where the CP-3320RD Cards are installed, only 16 channels are functional when the system is running. It may be that the position of CP-3160RD DVR board and CP-1605DC Daughter Cards is reversed, so the 40-Pin connector is connected to the wrong pin assignment.