8GB -2x4GB Memory RAM Upgrade for Dell OptiPlex 780 SFF, Desktop & Mini Tower PC
INSIDE YOUR DELL OPTIPLEX 780 - (SFF, DESKTOP & MINI TOWER). USFF - Ultra Small Form Factor only has two slots and max is 8GB (2x4GB). Kit Capacity: 8GB. Your PC has 4 Slots and can be upgraded to 16GB (4x4GB).