TUSB8042 4-Port USB 3.1 Gen1 Hub Texas Instruments TUSB8042 4-Port USB 3.1 Gen1 Hub provides simultaneous SuperSpeed USB and high-speed/full-speed connections on the upstream port and provides SuperSpeed USB, high-speed, full-speed, or low-speed connections on the downstream ports. When the upstream port is connected to an electrical environment that only supports high-speed or full-speed/low-speed connections, SuperSpeed USB connectivity is disabled on the downstream ports. When the upstream port is connected to an electrical environment that only supports full-speed/low-speed connections, SuperSpeed USB and high-speed connectivity are disabled on the downstream ports. The TUSB8042 supports per port or ganged power switching and over-current protection, as well as supporting battery charging applications.