CISCO M-ASR1001X-16GB COMP 16GB DRAM UPAddOn 16GB (2 x 8GB) DRAM Memory Kit For Server 16 GB (2 x 8GB) DRAM 667 MHz Dual rank Memory CL9 1. 80 V ECC Registered 240 pin DIMM Lifetime Warranty VPN: M ASR1001X 16GB AO SKU: RSC696089 UPC: 821455640265 16 GB of memory to maintain symmetry with processor and hard drive and bring out the ultimate computing experience Up to 667 MHz memory speed with CL9 latency to manage your routine softwares with pace and accuracy DRAM interface helps the memory