HP 803028-B21 COMP 8GB DDR4-2133MHZ ECC SRX4 RDIMMAddOn 8 GB DDR4 SDRAM Memory Module 8 GB (1 x 8GB) DDR4 2133 PC4 17000 DDR4 SDRAM 2133 MHz Single rank Memory CL15 1. 20 V ECC Registered 288 pin RDIMM Lifetime Warranty VPN: 803028 B21 AM SKU: RSC827034 UPC: 821455632949 8 GB capacity is enough to execute all memory hungry programs simultaneously 2133 MHz of memory speed skillfully manages the variety of apps and computational tasks 288 pin pin DDR4 2133 PC4 17000 interface multiplexes 2 bit data