It is obvious that these computers were used in a high tech system. There were devices  that were attached  that are now missing. However this does not change the functionality of the computer. This is my second one and it functions just as a well as the first. It arrived on time and just as described. This computer runs circles around my laptop. It has everything and normal user would need in a laptop. WIFI is provided by a USB plug and works just fine. I would recommend this computer to anyone, especially those with slow laptop who are looking for a desktop to work in the office and home. With cloud accounts you can still use your laptop on the go, but this machine is so much fast at home and the office. Overall I give it a five star rating. I have two and I love them. This is probably not for gamers and was not intended to be. It is great for a home or office computer.