The Hynix lot of 12X4GB 2Rx4 PC3-10600R server memory consists of 12 modules, each with a capacity of 4GB. This DDR3 RAM is designed with a form factor of RDIMM and a total capacity of 48GB. The memory is registered and has a bus speed of PC3-8500 (DDR3-1066), making it suitable for server components in enterprise networking setups. The modules have 240 pins and are specifically labeled as HMT151R7BFR4C-G7 in the model name. This server memory from Hynix is a reliable choice for enhancing performance and capacity in server systems.