Fully tested and working. Minor scratches or small scuffs possible. NR810 Series 4K ULTRA HD NVR. LNR600 Series 4K HD NVR. LNR600X Series, 4K Ultra HD NVR. LNR6100 Series 4K Ultra HD NVR. LNR6100X Series, 4K Ultra HD NVR. N841 4K Smart Detection NVR. N842-Series 4K 8-Channel Network Video Recorder. N861B-Series, 4K 16-Channel NVR with ...