Kmbox B+version(B+is suitable for dual computers). The B+version is Pro, and the dual computer is that the B computer controls the A computer. The software runs on the B computer, and the A computer does not open anything. The B+serial port is connected to the A computer, which is the same as the B version. This is a stand-alone mode.<br> Where the serial port is inserted, the serial port driver is installed.<br> Install the CH341 drive, or install wizard for automatic installation.<br> This version is an upgraded version of kmbox B. The main differences are as follows:<br> Separate the communication serial port from the keyboard and mouse, which can easily realize dual computer control. (USB receiving computer A, USB2 is connected to control computer B, USB3/4 is connected to keyboard and mouse, which can realize the function of computer B controlling computer A)<br> The usage of the B+version is consistent with that of the kmbox , and all are compatible. If you need to operate dual computers, you are recommended to buy the B+version. Serial port is connected to AI analysis computer B. Controlled terminal computer A. B computer can directly control computer A.<br> Type:With LCD<br> Colour:Transparent<br> Material:Plastic<br> Package Contents:<br> 1 * Controller<br> 2 * cables<br> Only the above package content, other products are not included.<br> Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.