The computer came the next day. Their listing on Amazon stated "Lenovo ThinkCentre M900 SFF Desktop Computer, Intel Core i7-6700 Upto 4.0GHz, 32GB RAM, 1TB SSD, 4K 2-Monitor Support DisplayPort, HDMI, DVD-RW, AC Wi-Fi, Bluetooth, TDL - Windows 10 Pro (RENEWED). Looking at the pictures it showed a built in Cd/RW. Instead I got a USB DV/RW which was almost as big as the computer. For some reason it did not work on the rear ports. Only the front. There is no HDMI port and they did not mention that a HDMI adapter was concluded. So I ordered an adapter as well. The WiFi required a USB dongle as did Bluetooth. I had a Logitech dongle for my wireless mouse. So this filled  up 4 USB ports. This did not leave much for USB connections. My old computer was faulty and I had just returned a Dell computer with problems. I contacted the vendor and like the Dell they offered no solution. Just return it. So now all my files and  data were installed just like the last computer. I was not going through that again. So the computer is working OK. But I had to buy a USB hub. I have a ton of cables coming out of it. I have not tried writing on the CDRW so I don't even know if it works. This was not a good experience.