Stanley Model 1 3D Printer for PCs can be connected via USB cable or Ethernet cables. If you are using a USB cable, check to be sure the cables are connected properly and make sure the printer is turned on. If you are using Ethernet cables, please check if PC and network cables are connected properly. If so please check the IP address for the printer and insert it in the web browser. If the printer is properly connected you will be able to view the internal camera.