The HPE P68663-H21 is a 64GB DDR5-4800MT/s ECC registered RDIMM designed for HPE ProLiant Gen11 servers. This 288-pin module operates at PC5-38400 speed with CL42 latency and features dual-rank, x4 configuration for optimal performance in multi-socket systems. It supports registered ECC protection, critical for enterprise reliability and data integrity in high-availability environments. Compatible with ProLiant Gen11 platforms including DL360, DL380, DL560, and DL580 servers, this module enables configurations up to maximum supported capacity per system. Typical applications include virtualization, database operations, analytics workloads, and mixed enterprise computing where memory bandwidth and error correction are essential. Tested and guaranteed; available via quote.