Timetec 8GB KIT (2x4GB) DDR3 / DDR3L 1333MHz PC3-10600 Non ECC Unbuffered 1.5V / 1.35V CL9 Dual Rank for Dell Optiplex 780 DT/MT/SFF Memory Ram.

DDR3 / DDR3L 1333MHz PC3-10600 240-Pin Non-ECC Unbuffered 1.5V / 1.35V CL9 Dual Rank 2Rx8 based 256x8 Module Size: 8GB KIT(2x4GB Modules) Package: 2x4GB ; JEDEC standard 1.35V, this is a dual voltage piece and can operate at 1.35V or 1.5V Guaranteed Lifetime warranty from Purchase Date Free technical support