Refurbished: DELL Desktop Computer OptiPlex 990 Intel Core i3 2nd Gen 2100 (3.10GHz) 4GB DDR3 250GB HDD Windows 10 Pro - Newegg.com
Dell OptiPlex 990 Desktop Computer PC, 3.10 GHz Intel Core i3, 8GB DDR3 RAM, 250GB Hard Disk Drive (HDD) SATA Hard Drive, Windows 10 Home 64bit (Renewed) | New Atlas
Amazon.com: DELL Optiplex 990 Tower High Performance Business Desktop Computer, Intel Quad Core i5 up to 3.4GHz Processor, 8GB RAM, 2TB HDD, DVD, WiFi, Windows 10 Pro 64 Bit(Renewed)'] : Electronics
Desktop Computer Dell Optiplex 990 USFF Intel i3 Processor 4GB RAM and a 250GB Hard Drive Loaded With Windows 10 Home Premium Used - Like New - Walmart.com