If you can use the HDMI port but computer can't find the new device when connect the USB port, please check. 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. The item "14MP HD HDMI USB Digital Industry Microscope Camera 0.5X Eyepiece Lens Adapter" is in sale since Sunday, February 21, 2021. This item is in the category "Jewelry & Watches\Jewelry Design & Repair\Jewelry Tools\Loupes & Magnifiers". The seller is "honey543" and is located in United States.
This item can be shipped to United States.