This is the Ubiquiti UNAS-Pro-EU, a 2U rack-mount network-attached storage unit designed for large-scale file storage and sharing inside a Ubiquiti UniFi network. It offers seven drive bays, each supporting either 2.5-inch or 3.5-inch SATA HDDs or SSDs, giving real flexibility to mix high-capacity spinning drives for bulk storage with SSDs for faster-access data in the same chassis. Network connectivity is built for genuine 10-gigabit performance: a 10G SFP+ uplink port handles the heavy lifting for high-throughput file transfers and backups, backed by a 1 GbE RJ45 port for management or a secondary lower-speed connection. As part of the UniFi ecosystem it's designed to integrate directly into a UniFi Network setup for centralised management alongside a site's switches, routers and access points, making it a natural fit for a business or advanced home network already standardised on Ubiquiti hardware that needs a dedicated rack-mounted file server rather than a desktop NAS box.