This is a Nikon Coolscan V ED also known as the Coolscan LS-50. I purchased this used and have used it to scan all of my old film slides to digital. It is an amazing unit! I just don't need it anymore, so time to pass it to someone who can use it and enjoy it. My upgrades: I purchased the fitted dust cover, I purchased the FH-3 film strip holder, I purchased and installed a new mirror from Analoghaus, I also had the unit cleaned and lubed. The new mirror was a tremendous upgrade, it really made a difference! Also comes with the original manual and various paperwork, all the software disks, a USB cable and a power cord. I used Vuescan for the software because I am on a Mac, but I have heard the the original Nikon Scan software (included) will work with Windows after some coding. The MA-21 appears to have a crack on the front which I never noticed until I was photographing the unit for sale!? I guess it isn't a problem as I have scanned hundreds of slides without it causing any issues! ha! Good Luck!