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, compatible with the B version. This is a 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 easy dual computer control. (USB1 connects to 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 original 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, enabling direct control from computer B to computer A. Type: With LCD Color: Black Material: Plastic Cable and controller shell color may vary randomly; specific colors cannot be requested, but internal functionality is unaffected Package Contents: 1 x Controller 2 x Cables Note: Light reflection and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.