PLEASE READ BEFORE PURCHASING: This is currently a developing/non-finalized product. While it has been tested and is functional, it is not a perfect commercial-grade automated feeding system. Occasional jams, misfeeds, or adjustments may be required, particularly with different types of trading cards. I am continuing to test and improve the design based on real-world use and customer response.This card feeder is designed to make scanning larger collections faster and easier by allowing you to continuously feed cards into your scanner. It has been primarily tested using standard hockey trading cards, so results may vary depending on the type, thickness, finish, condition, and size of the cards you are scanning.Because there are many different types, sizes, thicknesses, and finishes of trading cards, I cannot guarantee completely jam-free operation with every card type. Buyers should expect that finding the ideal stack size and loading angle may require a little adjustment.Customer satisfaction is extremely important to me. If you experience any problems with your feeder, please contact me and give me the opportunity to help. I will work with you to troubleshoot the issue and make it right, whether that means helping you adjust the setup, providing a replacement when appropriate, or working out another solution.