As a customer when you purchase an item you have the expectation that the item should work, and is functional for the purpose for which it was intended. The Dell Optiplex computer has significant problems, including slow startup, hard shutdown to power off, and is plagued with non-functioning Wi-Fi adapter, and malfunctioning keyboard. These problems render the computer virtually unusable and have caused me immense frustration and inconvenience.I am currently grossly disappointed with the service provided by this third party supplier and by extension the Amazon team.  I should not have to be made to deal with the inconvenience which I now face for trusting this supplier and urge anyone considering to do so to think twice about using them.DISAPPOINTMENT!!!!