This product is an Internet cafe extender specially designed for internet cafe centralized management. It supports HDMI signals, USB signals, keyboard, mouse and audio signal extension transmission, as well as supports switch and reset the computer host remotely. This product consists of a transmitter and a receiver, the transmitter and receiver connected through a CAT5e/6e LAN cable. The transmitter is connected to the HDMI and USB output of the computer host, and it is sent to the receiver via the LAN cable to restore the signals. The HDMI signal is used to connect the monitor, USB is used to connect the U-disk, camera and other USB external devices, and the receiver can also connect the keyboard mouse with USB port.