The difference between the 27W fast charging version and the 3U port of the millet jack board is the number of ports and charging power. With 3 jacks and 3 USB-A ports, the 27W Fast charge version supports fast charging up to 27W and is suitable for charging multiple devices simultaneously. The 3U port has 3 jacks and 3 USB-A interfaces, but the charging power is low, which is suitable for general daily use. Therefore, if you need faster charging speed, 27W fast charging is the better choice, and if you only need general charging needs, 3U port is enough.
27W fast charge, support USB port single-port output 27W, ordinary 3U port only 10W discharge