Be careful who you buy from!  We tried Skytech USA and the machine never showed up.  This time we purchased from Quality Recertified (which could be the same company).  This machine arrived earlier than expected and is excellent; very clean and "as new."  Two observations: the keyboard and mouse supplied with this machine are junk and you should probably just discard them (only reason for the loss of one star).  The (inexpensive) SSD was mounted with one screw, which allowed it to move around in the case.  We added a $1 carrier to fix that, then added another drive.  We will replace the SSD in the near future, just for reliability.  This machine had no PS/2 keyboard/mouse ports (didn't expect any), but they were easy to add using the connector from an old Lenovo machine (the motherboard had the required connector pins and the knockout was in the rear panel).  (We needed those ports for compatibility with the KVM switch.)  Surprised to find two serial ports, a big plus for our usage.  (We have a rack full of similar machines running unattended.)