Original New PSU For Dell OptiPlex 9020 7020 3020 T1700 255W Power Supply L255ES-00 4GWM VPMVK NT1XP FP16X YH9D7 3XRJ0 HCWV2 - AliExpress
Dell OptiPlex Drivers Download and Update on Windows OS | Driver Talent
DELL Desktop PC OptiPlex 3020 Intel Core i5 4th Gen 4590 (3.30 GHz) 8 GB DDR3 1 TB HDD Intel HD Graphics 4600 Windows 7 Professional 64-Bit with Windows 8.1 Pro License - Newegg.com