An improved port replicator for portable electronic devices includes an angle adjustment dock which has two separated sides extended to form respectively a flange with a first bore and a connector dock located on a surface to receive transmission signals, an anchor dock having a second bore corresponding to the first bore to couple with the angle adjustment dock, and an axle running through the first bore and the second bore. The port replicator thus constructed is simple to fabricate and assemble, and is adaptable to notebook computers of varying thickness to provide a steady and secure coupling.