Dell Optiplex 3020 Upgrade RAM, Video Card, Hard Drive Install Change Replace - YouTube
Dell OptiPlex 3020 MT Memory Upgrades @Memory.NET
Dell Optiplex 3020 Tower Business-Class Computer - Quad Core Intel i7 4770 up to 3.90 GHz, 8GB RAM, 128GB SSD, DVD, New Keyboard, Mouse, Wireless WiFi, Windows 10 Professional 64-bit(Used) - Walmart.com
Amazon.com: Dell Optiplex 3020 Small Form Factor Desktop Intel Core 4th Generation i3-4150 (Dual Core, 3.5GHz), 8GB RAM 500GB Hard Drive Windows 8.1 Pro : Electronics
Dell Optiplex 3020 MTW,Intel Core I5-4590 3.3GHz , 16G RAM, 256G SSD + 1T WIFI , BT , DVD ,VGA/DP, Windows 10 Home 64 bits Multi Language Used Grade A - Walmart.com