This is for 2 modules sold as a set (each 8GB, 16GB total) of genuine HP ECC server RAM. Working pull, light use. Specs below: These are SK hynix 8GB DDR4-2666 ECC Registered DIMMs (RDIMMs), server-grade memory modules. • Manufacturer: SK hynix (Korea)
• Capacity / organization: 8GB 1Rx8 (single-rank, x8)
• Speed / standard: PC4-2666V (DDR4-2666 / PC4-21300)
• Type: Registered (RDIMM) with ECC (error-correcting code)
• Typical timings / voltage: CL19, 1.2 V
• Form factor: 288-pin DIMM
Manufacturer part numbers:
• SK hynix part number: HMA81GR7AFR8N-VK (full marking includes HMA81GR7AFR8N-VK T3 AA 1940)
• HP / HPE part number: 864706-591 (also marked 8619C5 on the HP sticker)These are enterprise/server modules (compatible with systems such as certain Dell PowerEdge and HPE ProLiant servers that support DDR4 RDIMM ECC). They are not standard unbuffered desktop/laptop RAM and will not work in typical consumer motherboards that lack registered + ECC support. VERIFY THAT THESE WILL WORK IN YOUR SYSTEM, MISTAKES WILL NOT BE REFUNDED. These are working great, no returns accepted.