This board has the external clock optio (ATS9870-005). Dual port is standard for this unit. 256M acq memory model (you can buy upgrades up to 4GB from AlazarTech if they still offers Option 010 and 011).

The computer on the picture is to show functionality and is not included. I can build a computer for you to host this card at a reasonable cost if you can reach out to me and tell me your application and specs (please look up "Humgar LLC" on Google and I'm the first result).