500GB HDD(hard drive) included.
Pls send us a message in case you have any questions regarding compatibility,or call Swann technical services 24/7 at :18006272799
Swann DVR's work only with certain models of cameras.
Pls make sure your cameras are compatible with the Dvr before you place the order.
If you have any questions send us a message or call Swann customer service 24/7 at phone number 18006272799
Or visit the following link:
https://www.swann.com/media/wysiwyg/docs/swann-camera-compatibility.pdf