Lenovo ATC9 8GB DDR4-2400MHz ECC Registered RDIMM (PC4-19200) with CAS latency 17 and 1.2V operating voltage. Dual-rank module designed for 2-socket and multi-socket Lenovo ThinkSystem servers supporting registered ECC memory. Compatible with XEON processors and enterprise platforms requiring reliable, error-corrected memory for mission-critical workloads including virtualization, databases, and high-availability computing environments. Part number ATC9 provides proven interoperability with Lenovo's server lineup. Tested and guaranteed; available via quote.