AddOn 16GB PC3-8500 DDR3-1066MHz ECC Registered CL7 240-Pin DIMM Quad Rank Memory Module. The A3138309-AM AddOn 16GB PC3-8500 DDR3-1066MHz ECC Registered CL7 240-Pin DIMM is designed specifically for PowerEdge servers, offering robust performance and reliability. Featuring quad rank configuration, it ensures efficient data handling and stability under heavy workloads. This memory module is ECC registered, complying with PC3-8500 specifications, and operates at CL7 latency for enhanced system responsiveness.