Try a new USB port in PC & wait for a while. Try a new USB cable. Make sure there is no TF card in the camera. Otherwise computer will define it as USB disk if camera has TF card.1 0.5X C-Mount Adapter. The item "14MP HDMI USB 2 Ausgang Mikroskop Industrie Digital Kamera Video Recorder" is in sale since Friday, August 5, 2016. This item is in the category "Business & Industrie\Medizin & Labor\Labor, Mess- & Prüftechnik\Laborgeräte & -instrumente\Mikroskope\Sonstige". The seller is "outdoor2015" and is located in , . This item can be shipped worldwide.