The Optiplexes don't support ECC. Generally Dells with DDR2 don't support high density RAM. Crucial , and Nemix sell Dell certified kits. 8GB DDR2 800 low density DDR2 is what should work.
The Optiplexes don't support ECC. Generally Dells with DDR2 don't support high density RAM. Crucial , and Nemix sell Dell certified kits. 8GB DDR2 800 low density DDR2 is what should work.