To connect multiple usb devices to a single usb port, a can be used.

USB hubs can be used in this situation. These hubs typically have four to six USB ports, and can thereby allow the connection of more devices than the typical one-to-one connection that a standard USB port will give. This allows the user to expand the number of devices that the computer can read at any one time.

Ido not think so i think the more questions you ask they go away