The product is a lot of 4 Samsung 32GB 2Rx4 PC4-3200AA DDR4 ECC REG Server RAM modules, totaling 128GB of memory capacity. Each module has a capacity of 32GB and utilizes DDR4 SDRAM technology, with a bus speed of PC4-25600 (DDR4-3200). These DIMM modules come with ECC memory and are registered, making them suitable for server components in enterprise networking and server environments. The model number for these modules is M393A4K40EB3.