Amazon.com: Dell OptiPlex 990 Ultra Small Form USFF Computer Desktop Intel Core i5 2400S Up to 3.3GHz 8GB Ram 240GB SSD Windows 10 Pro (Renewed) : Electronics
Amazon.com: Dell Optiplex 990 SFF Desktop PC - Intel Core i5-2400 3.1GHz 8GB 500GB DVDRW Windows 10 Pro (Renewed) : Electronics
Amazon.com: Dell Optiplex 990 Small Form Computer Tower PC, Intel Core i5 3.1GHz, 8 GB Ram, 500 GB HDD, DVD-RW, WiFi (Upgrade Up to 16 GB Ram / 512 GB SSD /