Universal serial bus (USB) KVM switch using virtual USB for switching among multiple hosts

A Universal Serial Bus (USB) KVM switch for bridging between at least one host and at least one USB device is disclosed. The USB KVM switch includes a first virtual USB hub, a first virtual USB device, a microprocessor and a first multi-addressed USB device controller. The first virtual USB hub is configured for communication with a first host. The first virtual USB device is configured to communicate with the first host via the first virtual USB hub, and is provided with the same endpoint setting data as a first USB device. The microprocessor is configured to generate the first virtual USB hub, and enumerate the first USB device in response to electrical connection of the first USB device to the USB KVM switch. The first multi-addressed USB device controller is configured to electrically couple with the first host via the first virtual USB hub, and to generate the first virtual device and determine the endpoint setting data of the first USB device in response to enumeration of the first USB device at the mic