Disclosed is a keyboard-video-mouse switch capable of detecting keyword input and recording video data from a computer and keyboard input data from a console and method thereof. The keyboard-video-mouse switch includes a keyword filter and a capture unit. The keyword filter detects whether a predetermined keyword is inputted from the console into the computer and the capture unit records video data if the predetermined keyword is detected. Moreover, the capture unit may record keyboard input data for a complete monitor. The keyboard-video-mouse switch of the present invention further includes an alarm and a keyword database. The alarm will alarm an administrator when the predetermined keyword is detected. The keyword database stores data of keystroke combinations, which is defined as predetermined keyword data for at least one input method.