Choosing between a DVR card and a standalone unit depends on your technical comfort and existing hardware.

This determines how many cameras can be connected. Common options include 4, 8, or 16-channel cards, though some professional cards can be stacked to support up to 64 cameras.

When selecting a DVR card, prioritize these technical specifications to ensure compatibility and performance:

Verify the interface (PCI vs. PCIe) and operating system support. Many older DVR cards only work with Windows XP or 7, so check for Windows 10/11 compatibility before purchasing. Card vs. Standalone DVR: Which is Better?

Look for "Real-Time" cards that offer 30 FPS per channel for smooth video. Some budget 16-channel cards might offer a total of 120 FPS, meaning each camera only records at 7.5 FPS, which can look choppy.