I don't even know where to begin on this review. If there was 10 stars I would give it. Not one complaint.I was a little hesitant at first reading some of the negative reviews. Some said that the product came damaged, others said that the OS version was too old to update so the computer was basically worthless (can't download apps or use Microsoft Office 2021/365), some said that the computer was slow and sluggish. These are all false in my experience.1). The computer arrived well packaged and protected. It was protected by large, thick, bubble wrap coverings that held the entire computer in place during shipping. I was slightly disappointed that I did not receive a wireless keyboard and "Magic Mouse". But that is OK. The keyboard and mouse that I did receive were wired, genuine Apple products that were clean, new in appearance, and in perfect working order. It is important to note that I did receive a keyboard, mouse, and power cable. Some reviews said they did not receive these items.2). When I say this computer is just like new... it is just like new. Absolutely gorgeous out of the box. There was not one scratch on it. When they say in the description that it arrives looking "brand new" they 100% mean it. It came with a beautiful, rich display, that is just lovely. Set-up was a breeze. It was wiped clean and opens to the factory set-up screens. I was working on the computer in less then 5 minutes from the time I turned it on. Upon looking at the "About This Mac" screen, it said that the unit was running OS 10.12.6 (Sierra). This is the OS operating system from late 2016. I upgraded it to 12.0.1 (Monterey) with ZERO issues; first shot; nothing crashed. Address I used was: https://apps.apple.com/us/app/macos-monterey/id1576738294?mt=12. So I am running the most current version of OS and can now download apps and use the most current version of Microsoft Office. From what I understand, anything later than 10.8 (Mountain Lion), can be easily upgraded to Monterey if you have the storage for it. Depending on what source you listen to, some say it is 10.11 (El Capitan) and later that can be easily upgraded. I am not really sure on this, I am not an Apple Genius and don't pretend to be. Regardless, the 10.12.6 (Sierra) that I received, upgraded to Monterey with no issues. If for some reason you can't get it to update my friend who is an Apple person believes that Microsoft Office 2016 will run on 10.12.6. But thats taking a risk on purchasing software and it not working.In addition, the unit did in fact come with 1TB of storage on the HD and 8GB RAM (4 and 4). There is No DVD or CD Writer on this unit.Overall, this is just a fabulous iMac. Why would you ever purchase new? This was a literal quarter of the price of a brand new iMac and it runs perfectly. Only time will tell if my opinion will remain unchained. I suppose it could break at any time, but so far, so good. I highly, highly recommend you buy from "All Out Apple". This is where I purchased this iMac from. In my opinion, an incredible price, for a basically new computer.*** it is important to note, I am using this for a basic home office. Internet, basic word, excel, some face time and Google Meet. I am not doing any professional editing, video gaming, or designing. You may need something different for those applications.****