Connecting a laptop to a desktop computer will let you transfer data files between computers and share a single Internet connection, printer and other peripherals. A special type of USB cable is required for this connection to work. Get the cable, then follow these steps to hook up a PC to a laptop.
Log off and shut down both computers.
Connect one end of the bridged USB cable to a free port on the laptop computer and plug the other end into a free USB port on the desktop computer. USB ports are typically located on the side and back edge of a laptop and on the front and back of the desktop.
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Power up both computers and wait for the "New Hardware Detected" message to appear on each screen. You can now use both computers to transfer data back and forth.
Turn the line switch in the USB cable to Link Mode to transfer data between the desktop and laptop.