HP N0H86AA COMP 4GB DDR4-2133MHZ ECC SRX8 UDIMMAddOn 4GB DDR4 SDRAM Memory Module 4 GB (1 x 4GB) DDR4 2133 PC4 17066 DDR4 SDRAM 2133 MHz Single rank Memory CL15 1. 20 V ECC Unbuffered 288 pin DIMM Lifetime Warranty VPN: N0H86AA AM SKU: RSC540354 UPC: 821455610893 DIMM 4 GB of memory to heighten your computer's performance 2133 MHz of memory speed with Unbuffered signal skillfully manages the variety of apps and computational tasks 288 pin pin DDR4 SDRAM interface multiplexes 2 bit data from memory