1.This DVR system does not include cameras or a hard drive.

2.For recording, you must install a 3.5-inch SATA surveillance-grade hard drive (recommended: 500GB-2TB, up to 8TB). Standard desktop hard drives are not compatible.

3.NOT compatible with SDI/PoE/IP cameras.
This wired DVR supports analog cameras(up to 1080P).For perfect compatibility and full feature access, we recommend using this DVR with ZOSI 1080P analog security cameras.

ZOSI H.265+ 8CH 3K Lite Hybrid 4-in-1 Analog/AHD/TVI/CVI Surveillance Video Recorders CCTV DVR System for 720P, 1080P Security Cameras