Full Details from Amazon.com : http://www.amazon.com/gp/product/B00CB8LYSQ?tag=onigi-20

4GB RAM Memory for Compaq HP Omni 120-1124 Black Diamond Memory Module DDR3 SO-DIMM 204pin

Brand new certified 204pin PC3-10600 1333MHz DDR3 SO-DIMM Black Diamond Memory
Low density 4GB memory single stick memory module
100 compatible garrantee for Compaq HP Omni 120-1124
100 pre-tested on Compaq system to ensure functionality
Lifetime warranty