Compatibility check – please read before ordering: This DVR supports 4 analog cameras (TVI/AHD/CVI/CVBS, up to 3K/5MP) plus 1 IP camera (up to 6MP). As a sustainable eDVR, it consumes 45% less energy than a traditional digital video recorder, saving 40-45 kWh/Yr Every percentage of energy we save is every action we take firmly for our planet. Requiring no hard drives, this 3K Lite eDVR with a 1TB embedded SSD. With nearly no shock, it achieves a 10+ year service life, far exceeding the 4-5 years of traditional HDD DVRs. Its read/write performance is also enhanced by specially designed NAND, outperforming normal security DVRs. Cooperating with H.265 Pro compression, it up to 28-day recording with 4 cams. Thanks to the chip-level eSSD tech, this home security DVR is only half the weight of a traditional DVR. Smaller in size means easier installation on the shelf or even on the wall without affecting the house's decoration and design.