Please note that activation is required before use and there is no need to refresh the firmware (the latest version is pre-installed). Upon receipt, only activation is needed. Kmbox B+ version (B+ is suitable for dual computers). The B+ version is Pro, designed for dual computer control where computer B controls computer A. The software runs on computer B, while computer A does not need to run any software. The B+ serial port connects to computer A, similar to the B version. This operates in stand-alone mode. Install the serial port driver upon connection. Install the CH341 driver or use the installation wizard for automatic setup. This version is an upgraded version of the Kmbox B. Key improvements include: - Separation of the communication serial port from the keyboard and mouse ports, enabling easier dual computer control. (USB connects to controlled computer A, USB2 connects to control computer B, USB3/4 connects to keyboard and mouse, allowing computer B to control computer A) - Usage and compatibility are consistent with the standard Kmbox. The B+ version is recommended for dual computer operations. The serial port connects to analysis computer B, while the controlled terminal is computer A, allowing direct control from computer B to computer A. Type: With LCD Color: Transparent Material: Plastic Cable color and controller color may vary randomly; specific requests cannot be accommodated, but internal functionality is unaffected Package Contents: 1 x Controller 2 x Cables Note: Light reflection and differences in display screens may cause slight variations between the product color in images and the actual item. Measurement may vary by +/- 1-3 cm.