"Ubiquiti Protect Network Video Recorder. Video input channels: 4 channels. HDD capacity: 4 GB. Ethernet LAN data rates: 1000,10000,100000 Mbit/s. Product colour: Grey. Processor frequency: 1.7 GHz""Enterprise network video recorder, can provide up to 30 days of 4K video storage for 15 cameras or Full HD video storage for 50 cameras

The UniFi® NVR is an enterprise network video recorder that integrates an NVR, the UniFi Protect software, and a 4-drive bay. UNVR unifies enterprise-class data protection and scalable storage with simple Plug and Play integration using the intuitive UniFi Protect software. From a desktop computer or mobile device, you can access your surveillance recordings from virtually anywhere using the intuitive graphical user interface. The mobile app is available for iOS and Android-based devices. The drive bays are easily accessed from the front panel, so hard drive mounting and maintenance are simple. Using four 8 TB drives in a RAID 5 configuration, the UNVR can provide up to 30 days of 4k video storage for 15 cameras or Full HD video storage for 50 cameras."