The product is an 8GB DDR3 laptop notebook memory module with a speed of 1600mhz. It is a SO-DIMM form factor with a capacity of 8GB per module. The module has a CAS latency of CL11 and a bus speed of PC3-12800 (DDR3-1600). It is a single module and is not a custom bundle or modified item. It is compatible with any top brand laptops.