It has 16GB of RAM which is not officially supported on this model, but it works. Never have had any problems. If it wasn't for needing more drive bays (cheaper than hard drives at the moment) I would keep this. There is some dust on the fan that I could not get off with a vacuum and I do not have canned air at the moment. The drive trays and everything else was vacuumed.The NAS has been factory reset. Any other questions, please message me. The item "Synology 4 Bay NAS DiskStation DS918+ 16GB Installed (Diskless)" is in sale since Friday, July 30, 2021. This item is in the category "Computers/Tablets & Networking\Drives, Storage & Blank Media\Hard Drives (HDD, SSD & NAS)\Network Attached Storage". The seller is "pcguy911" and is located in Orlando, Florida. This item can be shipped to United States.