The UniFi Cloud Key Gen2 Plus / UCK-G2-PLUS is a hardware controller with a standalone application server. This is used for monitoring and managing your UniFi network devices and camera surveillance system. The Cloud Key Gen2 Plus has an eight-core processor with 3GB of RAM, a 1TB SATA hard drive for video storage and 32GB of eMMC flash storage and... uses the latest version of the UniFi controller with Hybrid Cloud technology.