This Dell OptiPlex 7050 micro PC was well-packed, and in great shape.  Windows 10 Pro was set up and ready to go (booted up to the Windows user account setup screen).The PC came with built-in WiFi (Intel AC 8265 with bluetooth), but there was no external antenna for the WiFi.  I had an antenna from a Lenovo desktop, so I used that.  I'm not sure how well the WiFi would do without an external antenna, but it does great with the antenna that I used.After using this PC for about a week, I haven't found any problems with it.