Dell UltraSharp 1909W AIO User Manual page 27

3.Connect the DVI cable to the computer. Route DVI cable as shown.
NOTE: This cable is shipped attached to the monitor.
4.Route the monitor power cable through the opening in the bottom of Cable Cover and connect it to the power cord receptacle on the back of the monitor
NOTE: The monitor power cable and the cable cover are shipped with the monitor.
5.Route the computer power adaptor cable (shipped with the computer) through the opening in the bottom of Cable Cover and connect it to the computer.
Push in until it clicks.