DDR3 / DDR3L 1333MHz PC3-10600 240-Pin Non-ECC Unbuffered 1.5V / 1.35V CL9 Dual Rank 2Rx8 based 512x8 Module Size: 8GB Package: 1x8GB ; JEDEC standard 1.35V, this is a dual voltage piece and can operate at 1.35V or 1.5V PCB Color may be different (Black or Green) due to different production batches; all Timetec products are high quality and rigorously tested to meet stringent standards For DDR3 Desktop Compatible with Intel and AMD CPU, Not for Laptop Guaranteed Lifetime warranty from Purchase Date and Free technical support based on United States