![Amazon.com: DELL OPTIPLEX 390 DT Desktop Computer, Intel Core I3-2100 3.1GHz, 8GB DDR3, 1TB, DVD, WIFI, HDMI, VGA, Bluetooth 4.0, Windows 10 Professional 64 Bit (Renewed) : Electronics Amazon.com: DELL OPTIPLEX 390 DT Desktop Computer, Intel Core I3-2100 3.1GHz, 8GB DDR3, 1TB, DVD, WIFI, HDMI, VGA, Bluetooth 4.0, Windows 10 Professional 64 Bit (Renewed) : Electronics](https://m.media-amazon.com/images/I/61vXvA7s6kL._AC_UF894,1000_QL80_.jpg)
Amazon.com: DELL OPTIPLEX 390 DT Desktop Computer, Intel Core I3-2100 3.1GHz, 8GB DDR3, 1TB, DVD, WIFI, HDMI, VGA, Bluetooth 4.0, Windows 10 Professional 64 Bit (Renewed) : Electronics
![Amazon.com: GearMo® Windows 10, 7 64-bit Compatible USB to Serial Adapter RS232 DB9 Short 8 Inch Cable : Electronics Amazon.com: GearMo® Windows 10, 7 64-bit Compatible USB to Serial Adapter RS232 DB9 Short 8 Inch Cable : Electronics](https://m.media-amazon.com/images/I/61YFznxhAAL.jpg)
Amazon.com: GearMo® Windows 10, 7 64-bit Compatible USB to Serial Adapter RS232 DB9 Short 8 Inch Cable : Electronics
![Amazon.com: Dell Optiplex 3050 SFF Desktop Computer PC, Intel Quad Core i5-6500 up to 3.6GHz, 16GB DDR4, 256GB SSD, WiFi, 4K Support, DP, HDMI, Windows 10 Pro 64 Bit English/Spanish/French(Renewed) : Electronics Amazon.com: Dell Optiplex 3050 SFF Desktop Computer PC, Intel Quad Core i5-6500 up to 3.6GHz, 16GB DDR4, 256GB SSD, WiFi, 4K Support, DP, HDMI, Windows 10 Pro 64 Bit English/Spanish/French(Renewed) : Electronics](https://m.media-amazon.com/images/I/61OS95xw6TL.jpg)