The Ubiquiti Flex Mini 2.5G has been a highly requested review on STH since we launched The Ultimate Cheap Fanless 2.5GbE Switch Buyers Guide. This is a 5-port 2.5GbE switch also known as the USW-Flex-2.5G-5. Ubiquiti Flex Mini 2.5G Hardware OverviewThe switch has five 2.5GbE ports as the headline feature. The Realtek RTL8372N is the big switch chip. It appears to be the same as the main switch chip in the Ubiquiti UCG-Fiber as well.