I found a small device at an estate sale that doesn't appear to have even been used or removed from original packaging. In looking at the SDR.RTL website, there aren't any of their products that look like the one I have. I couldn't figure out how to attach a photo of the item to this post. It measures 3.25" X 2" X .5", has a small connector on one end labeled "USB", not the normal USB connection and on the other end there's 2 SMA connectors, one labeled "UV" and the other "HF". Any help in identifying it and how to connect it would truly be appreciated.