The Datacolor Spyder 5 Pro color calibrator for computer monitors is used but in excellent condition. If you want to make sure the colors of your picture file match what is coming out of your printer, the Spyder can calibrate your monitor to match the colors between your screen and your camera. USB connectivity and calibration software is compatible up to Windows 11. I'm selling this one because I ended up with two of them. Also, this can produce odd results if using a Mac, I don't recommend this for a Mac.