Upgrade your cameras using your original RG59 or RG6 Coaxial Cable wires. This DVR is the latest breakthrough in CCTV equipment allowing for a mix of your original analog cameras or your new HD-TVI cameras. This DVR also allows up to 1 high definition IP camera to be added, making it a true 5 channel recorder. This and a 3-year warranty make this a must have. Instantly upgrade to HD by adding one new TVI camera, or change them all! If your budget is tight, add the cameras where you need the most. This DVR will record both your old cameras and the new HD TVI cameras plus up to 2 additional IP cameras! The DVR senses the camera type and automatically adjusts to record. This DVR is compatible with Windows (all versions), Mac, Android and iPhone. It also allows for long distance cable runs up to 1000 feet - no more power boosters or short runs. You can also keep your old power supply to power the new cameras, and rest assured we only use Western Digital 'Purple' (Surveillance Grade) hard drives in all of our DVRs. These hard drives carry a manufacturer's 3-year warranty just like our DVR.