When sourcing a CCTV DVR Board, you must prioritize the Compression Standard, typically H.265 or H.265+, which significantly reduces bandwidth and storage requirements compared to older H.264 models. Ensure the board supports the required Resolution (e.g., 4K, 5MP, or 1080P) and Frame Rate (FPS) for smooth playback. Additionally, verify the Input Channels (4, 8, 16, or 32CH) and compatibility with multiple signal types like AHD, TVI, CVI, CVBS, and IP (5-in-1 Hybrid functionality) to ensure maximum versatility for end-users.