I set up this unit as an audio visual aid for my Algebra I & II classes. This unit came with an internal Wi-Fi card and external antenna. The unit set up consists of a series of prompts that asks for user preferences and log on information. Because the unit runs Windows, Microsoft asks for permission to monitor most aspects of your cyberlife. I shut all of them off.  I was able to log onto my school's local area Wi-Fi network easily. I use the HDMI port to connect to a wide screen TV monitor. It was plug and play unlike my Apple Air laptop which requires futzing around in the display set up. I bought a wireless USB keyboard and mouse which were plug and play having been detected immediately. I also used an external CD player plugged into a USB port. It ran an educational math app flawlessly. YouTube video runs flawlessly. I downloaded the Brave browser app which ran flawlessly. I highly recommend the DELL OPTIPLEX 7040. Set up is a breeze. It is stable and versatile. Its small footprint is a God send. Its internal hard drive and RAM can be upgraded as needed. The low cost, CPU power, versatility, upgradability, stability, ease of setup and use, make the DELL OPTIPLEX 7040 a gem.