The Logilink CP2045U is a 5-in-1 cable tester and port replicator designed to monitor and manage your computer's physical connection to USB, HDMI, FireWire, and USB-C ports. It features four USB ports: 2 x USB-A, 1 x USB-C, and 1 x micro USB-B. The unit also has an HDMI port, a 9 pin FireWire port, and an RJ45 Ethernet port. It has 3 LED indicators to verify the data connection on each port. The device is powered by USB and is compatible with both PC and Mac operating systems. The CP2045U is a useful tool for connecting a variety of peripherals and checking cable/connector performance.