OptiPlex 9020 All-in-One PC - Intel® Core i7, 8GB RAM
Refurbished: Dell OptiPlex 9020 USFF All-In-One with a 19" Monitor Desktop 4th Gen Intel Core i5-4570 3.2GHz 8GB RAM 1TB HD DVD-RW Windows 10 Professional 64-Bit - Newegg.com
Used Dell Optiplex 9020 23" All-in-One Desktop i5-4570S 2.9 4GB 500 1080P Windows 10 - Walmart.com
Amazon.com: Dell Optiplex 9010 AIO 23in FHD WLED All-in-One Desktop Computer, Intel Quard-Core i5-3470S 2.9GHz, 8GB RAM, 500GB HDD, DVDRW, WIFI, USB 3.0, HDMI, Windows 10 Professional (Renewed) : Electronics
DELL Optiplex 9020 AIO Disassembly for Hard Drive HDD SSD RAM Upgrade Replacement - YouTube
Amazon.com: DELL Optiplex 9020 All In One FHD (1920 x 1080) Business PC, Intel 4th Gen Quad Core i5-4570S, 8GB Ram, 500GB HDD, HDMI, VGA, WIFI, DVD-RW, Bluetooth, USB 3.0, Win 10