| 摘要 |
A keyboard, video and mouse (KVM) switch indicator is electronically connected between a USB port of a KVM switch and a USB port of a computer. The KVM switch indicator includes a status indicator and a controller. The status indicator indicates an electronic status of the computer electronically connected to the peripheral equipment. The controller sets trigger values of input voltages inputted into the controller, detects voltage values of the USB port of the computer, determines whether the voltage values of the USB port of the computer are same as the trigger values, and outputs current to the status indicator according to determination of the controller. If the voltage values detected by the controller are same as the trigger values, the controller outputs current to light the status indicator or to sound the status indicator. |
