Axiom 16GB PC3-12800 DDR3-1600MHz ECC Registered CL11 240-Pin DIMM 1.35V Low Voltage Dual Rank Memory Module. The AX51593398/1 Axiom 16GB DDR3-1600MHz ECC Registered CL11 memory module is designed for high reliability and performance in server environments. Operating at a low voltage of 1.35V, this 240-pin DIMM module supports ECC (Error-Correcting Code) for data integrity. It features dual rank configuration, ensuring efficient multitasking and system responsiveness. Ideal for server upgrades, it meets PC3-12800 specifications, delivering stable performance and reliability for critical computing tasks.