Overall, this was a good value purchase. Cosmetically, the machine is in excellent condition internally and internally, boards and components were clean and looked well maintained. System booted up perfectly and included the operating system as described. I looked at the configuration of the machine and all memory and disk space was as ordered, with one very notable exception. The unit received has the model number Dell Optiplex 9020 on the front bezel as was ordered, but the system configuration indicated the model was a Dell Optiplex 7020, a lower grade machine than the 9020. However, this doesn't really effect machine performance as the memory and disc space has been upgraded per the seller's specs. It was  disappointing, though to see this anomaly. Machine arrived very well packed and very quickly (much quicker than the seller indicated in the purchase information). I am having persistent and ongoing problems with the microphone connected to the line-in jack on the back of the machine (it doesn't seem to work) but on researching on the internet this appears to be not uncommon for this model. There is another microphone jack on the front of the machine which works fine. Driver upgrades for the 9020 are generally not supported as the machine is a 7020. All in all, worth the purchase.