Can I use any USB card swiper or do I have to rent them from Silent Auction Pro?

If you are using the integrated credit card processing through Silent Auction Pro and Vantiv and you want to use a USB card reader, then you MUST use one supplied either by Vantiv or by Silent Auction Pro. These card readers are encrypted with an Vantiv key to provide extra protection when scanning and sending card data through the Internet. Other card readers will not work. If you are using PayPal, we have several card readers to recommend that you may purchase from retailers online.