Business computer, using for local hosting of QB file.Fast, quiet, easy to open up and work on. Live the c drive being m2 directly on motherboard.Added 2 ea 16gb ram sticks and 1 wa 2tb ssd. Plenty of room to add more drives if needed and even more room if I remove the optical drive.Bought recommended fan size but too large. Have next size smaller and perfectly lines up with screw holes.May buy another of these and add graphics card, which will need larger power supply. But again easy to open up and work on. Front cover and optical can be removed easily to gain access.Very happy with price for a very nice work computer.