The product is a lot of two 4GB PC3-12800E DDR3 ECC RAM modules by Samsung. Each module has a capacity of 4GB, a rank of 2RX8, and a bus speed of DDR3-1600MHz. These DIMM modules have 240 pins and are designed for high reliability with ECC memory features. With a total capacity of 8GB, this RAM lot is ideal for enhancing the performance and memory capacity of computers requiring reliable and fast memory modules. Made in China, these modules are a dependable choice for increasing the efficiency of various computing tasks.