Needed a small dedicated computer just to run one thing, security cameras. Was advertised as a Pentium processor not as a Celeron. Would never have bought it if I knew it was a Celeron. Knew it was going to need more than 4 Gb of ram so bought an additional 8GB stick but it only has one memory slot so cant put in 12GB of ram. No cooling fan, just one huge heat sink that takes up hard drive slot so cant add second hard drive for video capture. Keyboard and mouse are as cheap as you can get but I already had added a BT keyboard/mouse from Logitech so I was ready for that. Took a while to figure out that the case SLIDES off to get inside. I guess one nice thing about the Celeron processor, it can't get hot. Heatsink is absolutely cold to the touch after 4 hours of running graphics intense operation so no worries about it overheating. ABSOLUTELY get bigger ram for this, the 4GB is completely used up when operating so the little bitty CPU was spending 100% of its time just swapping programs back and forth to the SSD (which is 40% used up by the operating system and bloatware. Find another unit with more ram, processor power and disk drive space because there is NO way to expand anything except adding an external SSD/USB hard drive.