4GB KIT (4 x 1GB) for Dell Optiplex 210L 740 GX280 Small Form Factor GX320 GX520 GX620 DT/MT/SFF GX620 Ultra Small Form Factor. DIMM DDR2 Non-ECC PC2- | cixneo.com
Dell Optiplex GX620 Server Motherboard Part No. 0FH884 at Rs 7500/piece in Mumbai
Installing a Motherboard in a Dell Desktop Optiplex GX620 - YouTube