Ok...I think we have some confusion here.
Your Network Interface Card has nothing to do with SATA or any DVD-ROM.
If you are looking for power, you will need SATA or molex power (depends on your drive) from your Power Supply.
If your power supply doesn't have any connectors that will fit, you'll need a conveter - molex to SATA, etc.
If that doesn't answer the question, please restate and we'll try again.