Kiwi Pro bridges the two USB cable connections between the host and the target computer into a "virtual" serial cable, with serial ports exposed to both the host and the target. This setup allows the host and target to communicate directly using the exposed serial ports, enabling standard terminal applications like Putty and Minicom to facilitate the communication. This feature is a powerful tool for hardware and software developers to debug their applications across host and target systems without relying on a network environment.