1080p 4CH Penta-brid HDCVI DVR - Dahua Technology USA Inc
4 Ch S Series 4K DVR - TechVision USA
4CH Full 720P AHD DVR Security System 1TB Hard Drive 4*Outdoor Camera R9W44ch Channel Full 1080N 4ch Channel Full 1080N AHD DVR - Walmart.com
4 Channel Economical DVR | H264 REAL TIME Video Images
Samsung SRD-440 DVR 4ch Digital Video Recorder H.264
Amazon.com : 4CH 5MP Lite 5-in-1 HD Analog Hybrid DVR&NVR Supports Up to 5MP IP Camera+5MP AHD/TVI/CVI Camera and 960H Analog Camera DVR CCTV Surveillance Security System Video Recorder (1TB HDD Preinstalled) :