I have a very specific use intended for this unit and was relying on the advertisement to be accurate. It was not. I do not have time to ask 50 stupid questions on this thing. Though this unit is well worth the $155 I paid for it, I really needed the INTERNAL optical drive that was advertised. It came with an external USB drive with enclosure. The drive works but the on-board Intel graphics has trouble running it when playing DVD movies, even with updated drivers. Music and data CD/DVD operate fine. I had to spend more money for HP's drive with the modular clip on ebay. Had to buy a trim piece for the front panel as well. Then I had to add an Nvidia GT 710 to play DVD movies. More extra money out the window. It ended up being a $250 computer.People rely on the accuracy of advertisement. My purpose was to add a basic media PC to my camper. I can't have an external optical drive because that's more items floating around my trailer to get lost or damaged. Plus I cant rack mount it with an external optical drive. What disappoints me the most, they didn't verify a working hardware setup as the drive will not play movies with included on-board graphics without an upgrade.Make no mistake, it's a good machine. I had an old SSD laying around and added it. The Windows 10 Pro license is legit. It does not have full optical drive functionality.