Long read, so to summarize: Everything as described was included. Booted up just fine with Windows 10 Pro. Included mouse and keyboard, a USB WiFi dongle, a DC adapter, and a separate power cable. Was a little dusty inside. Had one 16 GB stick of RAM Samsung brand. Looks like there was a WiFi card at one point, which was removed. Appears that the rear antenna external part was removed and the wire was cut, leaving a cut piece of wire laying around under the motherboard. The front side antenna was left there. Value for money was good. Detailed post below.Everything as described in the description was provided and nothing was missing. The model I purchased did not include WiFi and Bluetooth (which I knew), but I did purchase a WiFi card and a set of antennas separate to install myself. They did include a USB WiFi dongle, which was not the best performing one, but it worked. Also included was a mouse and keyboard set, a DC adapter, and a separate power cable.Before I did anything to this machine, I did make sure it booted and it booted up just fine and Windows 10 Pro was installed and activated. So no issues with booting up. No bloatware or anything as well which was great. After powering off, and inspecting the back, I noticed in one of the holes there was a cut wire nearly sticking out the hole and I had no idea what it was. I tried to pull it out thinking it was just a small piece of wire but couldn't. More on this later on.When I took this apart, there was a noticeable bit of dust inside which I just cleaned with some compressed air. The CPU cooler fan was clean though as well as the heat sink. There was single 16 GB stick of RAM that I later changed to two identical 8 GB sticks. The thermal paste was still new and good, but I replaced it anyways before putting this back together.Now the interesting part, there were antennas already installed so it looks like there may have been a WiFi card at some point. The wire going to the front was still intact, but the wire going to the back appears to have been cut. On this machine, the rear antenna has a little piece that protrudes the rear side about 1/4 an inch out and snaps on to the back. It looks like that someone removed that external piece and instead of removing the whole antenna, they simply cut the wire connecting to that piece. This resulted in a piece of cut wire just laying around under the motherboard which in my opinion is very sloppy and some additional care could have gone to proper removal of this. I also don't like having lose wires hanging around inside machines since they may cause damage if they come into contact with any conductive parts. I attached an image showing the cut wire. May not be on the seller, but I think as a refurbished machine seller some time should go into inspecting the machines for things like this (especially since that cut wire was one of the first things I noticed before even taking it apart). Anyways, the antennas were replaced and a new card installed and connected.After putting it all back together, restarted the machine and the WiFi is significantly better. Other than that, everything else worked great as they did before I took the machine apart.