Lenovo ThinkCentre M92P High Performance Small Factor Desktop Computer, Intel Core i5-3470 CPU up to 3.6GHz, 8GB DDR3 RAM, 500GB HDD, DVDRW, Windows 10 Professional 64 Bit (Renewed) : Amazon.ca: Electronics
Refurbished: Dell OptiPlex 7010 Mini Tower Desktop, Intel Quad-Core i5-3470 Upto 3.6GHz, 8GB RAM, 256GB SSD, DVD-RW, VGA, DisplayPort, LAN, Wi-Fi, Bluetooth, Windows 10 Pro - Newegg.com
Refurbished: Dell Optiplex 7010 DT PC - Intel Core i5 3470 3rd Gen 3.2 GHz 8GB 1TB HDD DVD-ROM Windows 10 Pro 64-Bit - Newegg.com
What Hardware Does My Plex Media Server Need? - Plexopedia