NeweggBusiness - DELL OptiPlex GX520 Desktop PC Pentium 4 3.0GHz 2GB 160GB HDD Capacity Windows XP Professional 32-bit 3 Years Warranty for School and Colleges only (Verification Required)
Solved: Problem when upgrading to 4GB RAM (optiplex GX520) - Dell Community
Dell L280P-01 - 280W Power Supply for Optiplex GX520 GX620 DT 745 755
4GB [2x2GB] DDR2-533 (PC2-4200) RAM Memory Upgrade Kit for The Dell Optiplex GX520 Desktop (Genuine A-Tech Brand) at Amazon.com
2Gb (2X1Gb) Memory RAM Compatible with Dell Optiplex Gx520 Series Desktop By CMS A100 - Computer Memory Solutions
Dell OptiPlex GX520 Pentium 4 3.0GHz 1GB 80GB CDRW/DVD XP Professional Desktop | Desktop computers, Refurbished pc, Dvd drive
Dell Optiplex GX520 Memory / RAM
DELL OPTIPLEX GX520 NO RAM NO HDD NO OS CHASSIS. REFURBISHED. IN STOCK.
Dell optiplex gx520 GPU upgrade - Dell Community
1 Crucial Technology 4GB kit (2GBx2) Upgrade for a Dell OptiPlex GX520 System (DDR2 PC2-6400, Non-ECC,)