The product is a 4GB DDR3 SDRAM module by Kingston, with a bus speed of PC3-12800 (DDR3-1600) and a form factor of SO-DIMM. It is a single module with a total capacity of 4GB, featuring non-ECC memory. The model number is KTH-X3CS/4G, making it compatible with various computers and devices requiring ample memory capacity for optimal performance. This RAM module is a reliable choice for improving the speed and efficiency of your system.